In message , at 12:29:56 on Tue, 6 Oct 2020,
Basil Jet remarked:

Yes. Personally, I don't think Crossrail should go as far as Reading. I
think Slough was far enough.

Windsor IMO, assuming crossing the mainline is at all possible.

It's single track from Slough and a single platform, so capacity and
the ability to recover during disruption are poor.

I think the entire formation is double track.

erm: https://www.opentraintimes.com/maps/...ough#T_WINDSEC
--
Roland Perry