Maybe both clubs are tied to a certain style and are adamant that both managers are best suited for it? I’m sure both clubs would want to stay in the division, but if the boards of both clubs think that their styles of play are what they want to stick with then arguably that’s what they’ll live or die by.
It’s also a case of personnel- would changing to a more pragmatic manager change their fortunes, or are they suited to playing the way they are? Bringing in a manager suited for a rescue job potentially means spending to buy players that fit that too. It’s tricky because in the Championship they can blow teams away playing champagne football, whereas in the PL there will be a dozen clubs who do it better than them. You see it at least once a year with a promoted club.
Nowhere near, no- I think the older you get the more life gets in the way.