Three calls - two phone ones with HR and a video call with the team's manager and a team member, which also included technical exercises.
The HR part was clear and quite straight to the point, also very accommodating to my needs at the time.
The third call was a bit late in the evening due to timezone issues, but they were quite understanding. They were also able to see that some mistakes I made during the call were due to nervousness and tiredness (it was after my day shift at the previous job), which I really appreciated.