I was on the jump seat recently from a local UK airport to overseas via a major UK hub.
The mature captain had very little time on type, did not feel he knew as much about the glass stuff as his young F/O and made no secret of how he looked to his F/O for guidance and cross checking of his selections and actions on all these aspects. However there was never any doubt about who was the captain or how the F/O accepted his captain's background and experience. It was a joy to watch them operate as a crew.
No matter the rules or SOPs in the end it is the quality of the individuals in the cockpit (not only their piloting skills) that is so important for a safe flight.