Very, very, very technical.
And as I predicted, my 90 minute interview really was just a smashing together of the two 45 minute interviews most people go through. So it was split into two parts.
I think I did well enough in the first half, but in the second (which was about trees, which I'm not that great with/haven't fully covered yet in classes) I sorta fell apart...
The interviewers seemed really nice though. I guess that's a plus?
And that'd be bit for my first technical interview. I'm surprised I wasn't more nervous during it. But of course now I have to wait for their decision, which is sure to be loads of fun and not anxiety-inducing at all.