They were trying to get the 'Hard wire' link working - which is the direct cable link between the ISS and Dragon. What we were all hearing, was the 'Big Loop' which is comms via Mission Control, SpaceX, Dragon, and the ISS - which carries a couple of seconds delay.
What got me, was that the whole boarding process was held up for over 30 minutes, because NASA couldn't progress past their 'hard wire' item on their checklist.
They eventually switched to RF (radio) direct link between the ISS and Dragon to be able to progress past that checklist item - later on the hard wire audio was fixed and working.
What got me, was that the whole boarding process was held up for over 30 minutes, because NASA couldn't progress past their 'hard wire' item on their checklist.
They eventually switched to RF (radio) direct link between the ISS and Dragon to be able to progress past that checklist item - later on the hard wire audio was fixed and working.