I don't remember if someone from here posted it or if I found it online but this is a good interview with Michael Horse (Hawk)
A particular quote that I found interesting
"Speaking of the Twin Peaks police, Ontkean did not return for this 18-episode run. Was it a bit different not having him there and what would you say to fans who are worried the show won’t be the same without his presence?"
"All I’m going to tell the fans, I will guarantee you that you will not be disappointed (laughs). That’s a personal guarantee from the Hawk (laughs). Because we’re fans, we’re all fans, I’m a fan; and as I’m filming this thing, I’m filming it as a fan. I’m thinking to myself on the first day I wonder, will people be disappointed? Nooo. No (chuckles). And Mark’s insight into the character of the Hawk, it took off like it never left. Like I said, I forgot so much, it’s been 25 years but it’s like it happened yesterday. It’s been so long, but the minute I stepped back into it, it was like I never left."
While I know the chances of Ontkean making a surprise cameo are about 00000001% I find it interesting he completely danced around commenting on Ontkean. I wonder if he maybe came on set to visit. So maybe that's why he didn't or if I'm just reading into it which is entirety possibly as well.
Here's the full article if it wasn't all ready posted on here.
https://ihorror.com/deputy-hawk-a-twin- ... ael-horse/
The milk will get cool on you pretty soon.