Questions & Answers about Я слышал беседу между менеджером и клиентом.
Why do менеджером and клиентом both end in -ом here?
They are in the Instrumental case because of the preposition между (between). When talking about a relationship or position 'between' two things, между always requires the Instrumental case for both nouns.
I know the word разговор for 'conversation'. What is the difference between разговор and беседа?
Разговор is your everyday, general word for 'conversation' or 'talk'. Беседа is a bit more formal and implies a polite, structured, or serious discussion. It fits perfectly here since it is a professional context between a manager and a client.
Why is the word for conversation spelled беседу instead of беседа?
It is the direct object of the verb слышал (heard). Since беседа is a feminine noun ending in -а, it changes to -у because it is in the Accusative case.
Why use the imperfective verb слышал instead of the perfective услышал?
Using the imperfective слышал focuses on the process, showing that the speaker was listening to the conversation as it was going on. If they had used услышал, it would mean they suddenly caught the sound of it or just noticed it in a single moment.