Kenmore Elite dryer won't start

Thank you!

I started to disassemble my dryer and noticed the belt is broken. Could that be preventing it from starting?

I have it disassembled now, but the motor is still installed. I tested both windings for continuity and they both passed. I’m not sure where to go from here, hoping the broken belt was the issue?

I also have another question, not sure if it’s related. For the last year or so the dryer has been drying clothes very slowly. We keep the lint screen very clean and the vents have never been clogged. I even took out the drum once and cleaned every spec of lint out of the entire machine. It didn’t help. I have no idea what could cause it to suddenly dry clothes much slower than it has in the past. Any ideas what could cause this?