Too many pitches

[MD Longhorn]

Curious how you guys handle this. I'm very diligent with the 5-pitch warm-up between half-innings. How do you handle a partner who is not? As BU, I generally move to my starting position at pitch 5, whether PU has called for balls-in or not. Many teams just know they get 5 --- but some will pitch until told to stop.

Had one such partner this weekend. Found myself calling balls-in for him. Felt weird and somewhat inappropriate doing that, as I know it bugs me when partner does that and I'm PU.

At what point do you step in and call balls-in? (if ever).
At what point do you come in between half innings to say something, and if so, what do you say.

In one game I was observing, this partner allowed no less than TWENTY-ONE warm-up pitches, and his partner didn't do anything. He didn't even stop it - the catcher actually turned around and asked, "Should I throw down now?"

Same partner took 6-7 minutes to handle a straightforward substitution.