Р51
И РАЗГОВОРА (у) НЕТ (БЫТЬ НЕ МОЖЕТ) (о чём)
collVPimperspres only
fixed WO 1. sth. is impossible, ruled out altogether: об X-e и разговора быть не может - X is out of the question
there is (can be) no question of X(in limited contexts) that isn't even up (a matter ) for discussion.
2. yes, certainly
no question!
(what a question (what are you talking about),) of course one will (can
etc)!(but,) of course!