Pfeiffer comes first to mind. Wouldn't spend 2m when I told him I was considering Sedevacant. "It's a trap. Hrmph. Gotta go."
Bitzer didn't even do that, just looked at me like I had an uncircumcized forehead, which was preferable to the "Hrumph! Time for pie!"
Granted, these are more omissive than the reverse, but it ends the same.
To be fair, in a way they were both perfect in that their silence was yet another straw on a broke-back camel.