So I heard Hunt this week talking about how the absolute priority is to get the deal signed off before May 23rd. Which is the sort of fantasy and delusion that I really wish journalists would pick up on, given that the Withdrawal Agreement Bill, i.e. the thing that actually puts the Withdrawal Agreement into UK law, still needs signing off on and it's not even been presented to Parliament yet!
There's 17 planned sitting days of Parliament between now and May 22nd, and just as an example, Maastrich took 41 days to be approved, and Lisbon took 25. This bill is going to be rather more substantial and important to everyone than either of those, so slamming that through in less time seems rather implausible and highly irresponsible.
Then there's the possibility of amendments. If any of those amendments to the bill change the nature of the Withdrawal Agreement (and you know what amendments the ERG/DUP will want to push) means it can't be ratified by the European Parliament.
Oh yes, they need to ratify it too, and they break up at the end of the week. Sure, there's plans for an extraordinary session, but that'd need organising, which would take time.. which just eats further into the May 23rd deadline.