I think we have got two entirely separate concepts mixed up here.
I was proposing that, given that its within a few hundred metres anyway, that in the situation where NPR to Liverpool via HS2 doesn't happen, we could just add a chord to allow Mid-cheshire line trains to be rerouted via the Airport into the HS2 platforms.
That is an entirely different concept from the ones currently in development.
It's me embracing my inner crayonista, although I think it is not too ridiculous as far as Crayonista things go.