It's vertex animation. I read the help for ent_animate and all of the examples are for bone animations as far as I saw. Is it possible to simultaneously to play two different key frame's ranges in case of having vertex animation?

Example: mouth01 - 1-6 (frames)
and
walk07 - 30-39 (frames)
*at the same time.

I hope you get what I mean.
I'd be grateful for your further comments.