If you are asking me - the real (in reality probably only credible) chance for Scotland to leave the UK was in 2014 - just think about the differences between then and the now/future.....
- All parties would have been in the EU - there would have been no issues with borders etc.
- The experience of negotiating a WA would not have been established and it would have been a 'soft' outcome for Scotland
- And lots of other easily managed issues
Now...........
- How are Scotland going to deal with the border issue - a monkey that would have been on the UK's shoulder in the 2020 negotiations - but will now be on a future independent Scotland's - just think about that single issue - the problem will now be all Scotland's/EU's
- How are they going to deal with a) the loss of their biggest market, b) dependency of access to their 2nd biggest market via the UK and c) the insurmountable challenge - with regard to time and money - to being able to invest in infrastructure to do something about it
- The approach to and scope of a WA is now well established and as part of that - what will be the size of the WA bill and who is going to pay it - perhaps a welcoming EU;-)
- and many other very difficult issues such as dependency on UK departments such as DWP etc. that the newly independent Scotland are very dependent on
Hey - I have no axe to grind - if anything I support the issue of Scotland leaving the UK - they should be able to always self-determine. And they should have the opportunity to do so - I just fully expect that when that opportunity comes around again the result will be very different to what a lot of people on here think during the 'heat' of current events
I best not go too far off topic