Yes, they both were legit calls. Tough for Seattle for sure but don't do the crime if you can't do the time.
Just your opinion. On the interference call, if the D-back had pushed exactly the way the receiver pushed, and made the interception in the end zone, should a flag have been thrown?
Why did he have to touch the defender, i mean why was the defender hanging onto him? Your not allowed to do that after 5 yards. If you don't call the defensive holding you shouldn't call the push-off, especially when the push-off wasn't needed for the separation