Time to de-link them.
Talked to a Delta 747/777 Captain about the new 787.
Very nervous about it. No mechanical backups - all electronic stem to stern to save weight.
There are questions about how to certify it.
It’ll be interesting. The fact that somebody thought linking the entertainment system to the navigation system was a good idea, either at BCS or somewhere else, tells me the guy may be nervous for a reason.