Pick a guy. One is always worse than the other.
So they are both Stalling, but penalize only one? I dont think that is the right call. If they are both Stalling they should both be penalized. This does not only happen in the heavyweights, it also happens at any weight when two good wrestlers are afraid to lose and they both clam up and wont wrestle. Then its a good call to get them both to open up.