I completed 7 total interviews with this company: an informal interview with the CTO, a take-home assessment that took 3+ hours, and then finally a gauntlet of 5 interviews jammed into a single day.
In total, this took me a month to get through, and I received very few updates on my application status over that period.
Believe me when I say that this process is far too rigorous for something as inconsequential as what they're doing here.
Save yourself the time and effort. Just go somewhere else.