Learn Arabic (Modern Standard): كان بيننا حديث طويل عن العمل.

While Arabic often uses عند or لـ with كان to express 'had' in the past tense, a conversation is a shared activity. Saying كان بيننا literally means 'there was between us,' which is the natural way to say 'we had a talk' in Arabic, emphasizing mutual interaction rather than possession.

Why does بيننا come before the actual subject حديث?

In Arabic, if the subject is indefinite (like حديث طويل meaning 'a long talk' instead of 'the long talk') and the predicate is a spatial word or preposition (like بيننا), they must swap places. So instead of 'A long talk was between us,' the structure requires 'Was between us a long talk.'

Does the adjective طويل (long) have to match the case of حديث (talk)?

Yes! Because حديث is technically the subject of كان, it takes the nominative case. The adjective طويل follows its noun, so it also takes the nominative case. If you pronounce the formal endings, both end in the 'un' sound (حديثٌ طويلٌ).

I usually see حديث in religious contexts. Is it common for everyday conversations?

Yes, absolutely. While حديث refers to the sayings of Prophet Muhammad in religious texts, its fundamental everyday meaning in Modern Standard Arabic is simply 'speech,' 'talk,' or 'conversation,' just as it is used here about work.