What should be done just before sending out a signal into another domain if its under your control?

question was tricky, since the output was already getting registered. Panelist wanted to know wat should be done before its registered. I had no idea what to answer.

Since output of one domain is already registered and we are sending signal to another domain means we have to reenergise the signal for further process as it is in our control. Please correct me if i was wrong

Perform buffering or isolation of the signal if required as per another domain.