The sound of the stage separation was extremely loud, it must to have been a very stresfull moment for anyone onboard during that time.
I timestamped that to 2nd stage separation, and it gives a cool impression about what it's like (particularly the astronaut on the left's reaction).
3rd stage separation is even more dramatic
https://youtu.be/fr_hXLDLc38?feature=shared&t=548
The sound of the stage separation was extremely loud, it must to have been a very stresfull moment for anyone onboard during that time.