Ako ništa drugo, na pub kvizu razgovaramo.

It is an idiomatic expression meaning if nothing else, at least, or if for no other reason.

So Ako ništa drugo, na pub kvizu razgovaramo. gives the idea:

• If nothing else, we talk at the pub quiz.
• At least we get to talk at the pub quiz.

It often introduces a minimal positive point: even if other things are not true or do not happen, this one thing still does.

Because ništa is a neuter-form pronoun meaning nothing, and drugo agrees with it.

• ništa = nothing
• drugo = other / else, in neuter singular form

So ništa drugo literally means nothing else.

This is very common in Croatian:

• ništa novo = nothing new
• ništa posebno = nothing special
• ništa važno = nothing important

Grammatically, yes, it starts with ako = if. But in this fixed expression, it often works more like an idiom than a real condition.

So in many contexts, you should understand it as:

• if nothing else
• at least

It does not always mean the speaker is setting up a real logical condition. It often means: even if all the other advantages fail, this one remains.

Because Ako ništa drugo functions as an introductory clause/phrase before the main clause.

So the structure is:

• Ako ništa drugo, = introductory phrase
• na pub kvizu razgovaramo. = main clause

Croatian commonly uses a comma after this kind of fronted introductory element.

It is locative singular.

The phrase is:

• na pub kvizu

Here na means at / on, and because it refers to being at an event or location rather than movement toward it, it takes the locative.

So:

• pub kviz = pub quiz
• na pub kvizu = at the pub quiz

The noun kviz changes to kvizu in the locative singular.

Croatian often uses na with events, activities, and some public/social gatherings.

So you say:

• na koncertu = at the concert
• na sastanku = at the meeting
• na predavanju = at the lecture
• na pub kvizu = at the pub quiz

Using u would usually suggest being physically inside something, while na is the normal choice for participating in or attending an event.

Because in pub kviz, the word pub functions like an indeclinable modifier, similar to a borrowed descriptive word.

The main noun is kviz, and that is the word that gets declined:

• pub kviz
• na pub kvizu
• s pub kviza would be less usual, but again kviz carries the case ending

This is common with many modern borrowed expressions in Croatian.

Razgovaramo is the 1st person plural present tense of razgovarati:

• ja razgovaram = I talk / I am talking
• mi razgovaramo = we talk / we are talking

Depending on context, it can mean:

• we talk
• we are talking
• sometimes even we’ll talk, if Croatian present is being used with a future-like meaning from context

In this sentence, it most naturally means something like:

• we talk
• we at least get to talk
• we do have a conversation

Because Croatian usually drops subject pronouns when the verb ending already makes the subject clear.

Here, -mo in razgovaramo already tells you it means we.

So:

• razgovaramo = we talk

You could say mi razgovaramo, but that would add emphasis, for example:

• Mi razgovaramo, a oni šute. = We are talking, and they are silent.

Without emphasis, the pronoun is normally omitted.

Often yes, but not always.

razgovarati can be used:

• s + instrumental for the person you talk with
  
  • razgovaramo s prijateljima = we are talking with friends
• o + locative for the topic
  
  • razgovaramo o filmu = we are talking about the film

But it can also appear without either if the context is general:

• Razgovaramo. = We’re talking.
• Na pub kvizu razgovaramo. = At the pub quiz, we talk / we get to talk.

So this sentence is perfectly fine without stating with whom or about what.

This is mostly about word order and emphasis.

Croatian word order is flexible. A neutral version could be:

• Razgovaramo na pub kvizu.

But:

• Na pub kvizu razgovaramo.

puts a little more focus on where this happens. It can sound like:

• At the pub quiz, we talk.
• When we’re at the pub quiz, at least we talk.

With Ako ništa drugo at the start, this order feels quite natural because the sentence is building toward the one thing that still holds true.

It could be either, depending on context.

The present tense in Croatian can express:

• a habitual action
  
  • Na pub kvizu razgovaramo svake srijede.
  • We talk at the pub quiz every Wednesday.
• a current or immediate situation
  
  • Evo, na pub kvizu razgovaramo, a ne natječemo se ozbiljno.
  • Here we are, talking at the pub quiz instead of competing seriously.
• sometimes a future-related idea in context
  
  • Ako ništa drugo, na pub kvizu razgovaramo.
  • If nothing else, we’ll at least talk at the pub quiz.

So the broader context decides the exact time reference.

Yes, it is understandable and natural, especially in conversational Croatian.

It has a slightly marked, expressive feel because of the idiom ako ništa drugo and the placement of na pub kvizu before the verb. That is not wrong; it simply gives the sentence a more purposeful or contrastive tone.

A very neutral version might be:

• Ako ništa drugo, razgovaramo na pub kvizu.

But the original is also fine and may even sound better depending on what the speaker wants to emphasize.

Yes, very possibly.

razgovarati literally means to talk / have a conversation, but in context it can imply:

• spending time talking
• social interaction
• connecting with people

So in this sentence, the point may be not just we say words, but more like:

• at least we get some conversation
• at least we socialize a bit
• at least we interact

That kind of broader implication is very common in real usage.