iOS app background launch due to WCSession sendMessage: is there a budget?

AFAIK, background execution with Background Tasks framework is all budgeted. E.g., if we try to use it too much, the system would simply stop letting us do it, at least for some time.

Is it the same when we do sendMessage from Watch app to iOS app? Is there a chance we may overuse it so that system stops waking up the iOS app? Or I can rely and use sendMessage as often and heavy as I need?