Belle I think what happens is they talk to their families separately and then all together.
Could listen to Belle's dad all day long.
Love Maura's mum's reaction, it says it all and love Greg's mum, Amber looked genuinely touched.
Also, it's not scripted as they'd have to post a disclaimer; it's directed and certain conversations are set up to happen and things are filmed more than once if something interesting pops up off camera. Pretty sure that's been the case from the start.