Phone interviews entirely depend on the team where the opening is (even within Marquee), so can't comment on that.
In person interviews are 2-on-1, with one of them being from any team that has no correlation to the role you'll be doing (sort of a neutral interviewer, to gauge your skills all round). They usually take it from there. I haven't seen one with more than 3 rounds of in person, but it depends on how the team where the opening is available feels as things progress.
Not sure how helpful that is, but that's all I know.