I applied online. The process took 2 months. I interviewed at The Ohio State University in Jan 2021
Interview
Quite casual, more of a formality to check your English and sanity
Took about 5-10 minutes
No technical questions
Should be easy if your statement of purpose is genuine
Demonstrate confidence, passion and expertise then you are fine
Interview questions [1]
Question 1
Which faculty member's work is the most interesting to you?