Many thanks LITOW. Inbound is VS45 on a Sat.
Have just spoken to someone who has walked Terminal 1 to Terminal 9 - they are next door.
So fingers crossed we'll make it.
Incidentally have just been advised of a schedule change that gives us 1hr 30 mins to make the reverse connection. This is Sat evening @ 19.00 hrs so hopefully we'll make this as well?!