

Out of those 13 missions, I believe only 1 person has flown twice, and he’s not from NASA. He’s Mr Fedyaev.
This mission is the first where all four crew members are using the new SpaceX suit design. (Some details were given by the SpaceX guy at a NASA Crew 12 press conference earlier this year.) So presumably Fedyaev is the only person to have won both types of suit in space. Perhaps he’s giving SpaceX some comparative feedback.






Voice calls are allowed, so maybe it’s time to revive the 56k modem!
But seriously, as a non-expert I genuinely wouldn’t be surprised if you told me the audio stream was the easiest option, if the approved apps are all somewhat tamper-resistant. (Probably a very different process though, converting 20th Century analogue telephone line signals, versus converting just-decompressed digital audio.)