What they're saying is, at a minimum.... I'll give you an example.
Several times the outage in 2021 has been raised. That was on the wireless network. The reason they still offered the other services is it was only the wireless radio access network that was unavailable for a period of time. What Rogers is now saying is it would be good practice to flip the core. I don't know of another situation where the core failed in its entirety anywhere.