That’s not a case of time travel, that’s a case of being on the wrong side of the planet. Only the Navy and Marines got to use the F6F and they only used them in the Pacific, so no.
The M2 have something to say
To be fair, it’s difficult to say how many M2 conversion kits made it into the hands of troops and where, but I’m fairly confident a few made their way to Europe. Now they most definitely did not make it there before the end of 1944, but that is another story.
Why AVS-36, Fedorov, STG-45 is time travel
I will cut you a break here, just coz I’m a nice guy. 