Attacca is the term for playing one movement after another without a pause. Sometimes the composer indicates it, but often not. I do not do it often, not even once a season. But it is interesting that someone comments on it. I think the comment reflects how exciting it can be.

Attacca is a matter of taste and judgment. The two tonalities have to allow a smooth but exciting transition. The mood change has to feel right. The jump from one movement to another without a break has to be reasonable for all of the players.