Obstruction and Interference

[umpharp]

In most cases, I don't have a problem with catchers if its simple chatter. If the catcher were to say something like "wait" or 'no stop hold on" I would be talking to him/her.
In the second example, it is a good chance that I would have Interference. Of course, it would depend on the play. If you called it once, I doubt the runner would try it again...at least until the next game and a new batch of umpires.