Is acceptable to consult with your team during a match break? The context
I am not into chess, but The Queen’s Gambit revealed its interesting world, and something got stuck into my mind.
As shown by this article the movie had to make compromises, especially when depicting the tournaments which have quite strict rules, thus making them very boring for the commercial movie consumers.
The issue
The last match was so long that it required an overnight break. During this break, the players consulted with their teams and the movie suggests that Beth winning was partially influenced by this help. Is this possible in real-life tournaments?
I tried finding an answer, but only got this Quora discussion which suggests that long (overnight) breaks during tournaments are something very rare today.
I haven't seen the series, but this was a quite common practice known as adjournment. It is indeed legal to ask for outside help, in the form of teammates and even computer programs during adjournment. However, they rarely happen anymore:

With the advent of strong chess playing computer programs, which can be used to analyze adjourned positions, most tournaments have abandoned adjourning games in favor of shorter time controls. The first World Chess Championship not to use adjournments was the Classical World Chess Championship 1995, while the last one to use adjournments was the FIDE World Chess Championship 1996.

The Laws of Chess still have guidelines for adjournment, so it's possible to organize a tournament with these breaks, but I can't remember a recent high-level tournament which had them.