Quotes from the news wire:
If there is no-deal then there is a real danger of both sides spiraling downwards and blaming one another, possibly ending in a nasty standoff, we saw during the early days of the pandemic the UK's reluctance to work with the EU in key areas. How bad could that get if talks end in October, then the virus surges in November?
There is a certain logic to saying let's deal with both economic disruptions at once, from supply chains to the way that all of the economy is run, everything is going to have a change as a result of this virus. So, even though the two things are not really related and might make the other worse, I can see some logic politically in doing it all at the same time.