Originally Posted by
KodiakRS
If they don't call back within 15 minutes or so I'd say you've fulfilled your obligation to ask them and can appropriate guilt free.
You’re missing the point that there is no obligation to ask the other pilot. I’m not spending ten minutes on hold to get in touch with scheduling to relay my number to the other pilot to ask if I can appropriate his trip nor should anyone. Don’t want flying appropriated? Put yourself on the turnback list.