Behavioural

I've done loads of virtual behavioural interviews (ie talking to a screen with questions popping up and ai grading me (sigh)). Each STAR answer I've given here has been about 3 minutes maximum, and I've had about 5 answers normally to go through. If the behavioural interview im doing is 45 minutes-1 hour and 10 minutes is given for intro answers and outro questions, where is the rest of the time used? Do they get you to go into more detail about the STAR answers or something with a back and forth? More than 5 questions? Something else? Thank you.