Very poor process.
First two rounds were fine and interviewer explained the expectations well.
The third round was was bad. Interviewer did not allow to speak, as well as asked very straight question to which I answered correct. Very stubborn to know the approach or agree upon. If you start writing code, they expect you to explain logic first. If you explain logic, they want you to write code first :D. Also, the overall process was very slow.
Pretty poor experience. I interviewed and got selected at various other big companies. But at salesforce, process is not at all good.