The interviewing process has has been stages, but the HR team at Samsara is very attentive. They asked for references early on in the process to give time to prepare them. I got invited for an interview at their offices, where I spoke to 4 people 30 min each. Afterwards they scheduled another call with me, to let me know that I would not be invited for the next stage. In my opinion a quick mail would have been enough.