shes only died twice, that's amateur hour in doctor who companion terms

thank god someone else sees through the thin veil of the stupid time travel stuff in before the flood

i liked that it brought a sense of adventure back to the show, instead of the past few episodes (that I still enjoyed) that seemed to just cautiously travel from set piece a to set piece b, this time they dived in head first (!) into the adventure

Just rumours

I don't think that time was relative between the compression dial and gallifrey's time, i think the dial was just sent to the end of the universe where gallifrey was hiding, and then the doctor spent 4.5 billion years internally. I doubt the time lords would put the doctor into a thing to extract information and…

.. none of those things you mentioned are plot holes.