Just asked another user: but what is the limit of overtime periods in NHL?
Regular season NHL OT is 5 minutes of 3 on 3 hockey.
It has gone from 5, to 4 to the current 3.
After that its a shootout.
Playoffs its full 20 minute periods of sudden death with no shootout possibilities.
I am definitely not a fan of playoff/elimination games going to a shootout. The NHL will never go the shootout route in the post-season.
Never.
In the Playoffs there is No Limit and No shootout. Flyer and Penguins played 3 regular periods AND 5 20 minute overtime periods.