Did all the playoff teams. The only one out of 16 who had a sub-1 minute difference the 3rd and 9th forward (Like us) is the Bruins, who (like us) also used 22 different forwards throughout the year. I can't speak to them, but with us, we lost Jack, Timo, and Nico at various points for decent time frames, as well as losing McLeod and Toffoli for good, elevating the TOI for 3rd and 4th liners.
I'd imagine in a healthier year our #3 TOI forward (Likely a Bratt or Nico) has much more TOI than a 3rd line wing.