Bob, see my post 744# above.PhilandMena
I had a PCR test a couple of weeks ago, took 30 minutes for the results, same yesterday we was at the hospital for dressings changed, people having PCR tests to go back to the UK, while chatting to a couple waiting for their results about hip replacement, nurse came out and said all clear it's on you app, again about 30 minutes.
Are you sure your going to need two tests to enter France ? Or is it just a PCR test before your crossing. Bob.