Just as in sports, taking a break can stop a rally. It is ideal to call a break when your team is wandering off message, fatigued, or simply needs to take care of biological functions.
Coming to agreements on some deals may require longer consultation for an indefinite period, for example when the fast pace is more than the party can agree to during the negotiation and they need to talk to their attorneys, accountants, engineers, or others.
To counter breaks taken by the other party, you need knowledge of timing and the deal specifics, as well as some sense of schedule. When in doubt, a delay in closure can add many variables and intermeddlers. Give or request a reason and time to continue.