You'd have to find a way to distinguish that break from the others. It sounds like it's different only in the duration, and which break (number) it is. Using the break number is fine, but if you change your schedule you could break it. Sounds like the break duration is better.
So, as an example, if your short breaks are 15m each and your dinner break is an hour, you could add a third event with conditions:
(state = 2) and (secondsLeft = 6) and nextIsRound and nextLevelDuration > 15