I always appreciate the ethic of extremely calm radio tone when I hear these recordings. It's clearly something they emphasize, because it's so common, but I think it does a lot to communicate that a pro is on the clock and handling business.
Listen to some guard frequencies with aviators displaying such a lack of professionalism it may make you question how we’re allowed to fly.
What you’re hearing is hundreds or thousands of hours of flight time; many of which are spent practicing forced landings, and the radio language that becomes second nature.
VHF requires you to be incredibly clear when speaking, a single shared frequency enforces short messages that are to the point.
I can pretty much guarantee neither of the flight crew thought about any potential inquiry until after they had made a safe landing; as that would’ve been their only focus.