Then you are all good. Sorry I understood that you were afraid of this happening. If you have been driving around with almost full tanks you should be fine since the flow rate is very high. I pumped a whole tank over in a few minutes by blocking a valve… You probably have nothing to worry about.
You should see it with a flash light. It is very obvious there is a tube in there and there will be fuel flowing out of it… look at this you can kind of see it on the third Picture.https://forums.jag-lovers.com/t/how-i-removed-fuel-filler-necks/357452