Here is a question?
If you are that important, should you really be that contactable??
Anyway, those points aside, would you really like to phone the other end and tell them you are going to be 45 mins late, risking possible malfunction of aircraft equipment (YES- We do things before moving from the gate, such as aligning the Inertial Reference System - used for navigation, etc)
or would the office junior they send to pick you up at the other end be happy enough to wait 45 mins, so long as it means you get there ok??
Just a few thoughts
ODL