The article is very light on technicalities but as far as I can tell, this expedition is WAY outside the sat territory. Sat divers do perform "seawalk"s during

The article is very light on technicalities but as far as I can tell, this expedition is WAY outside the sat territory. Sat divers do perform "seawalk"s during their missions, so they do need to perform the necessary steps to adjust to pressure changes. This can't be the case here, they were inside their submarines the whole time. ps: 100 feet = ~30m, 650 feet=~200m