Commander Kinsey wrote

"All the filming took place in summer 2020, but the editing process needs
to be done under Covid restrictions, which is expected to delay the
process."

What does that even mean? How can editing something possibly involve
close contact?

When more that one person is in the editing suite deciding
what editing is done with the original footage. Almost none
is done by just one person acting alone. Look at the credits.

https://www.bt.com/tv/entertainment/...on-hammond-may