The Past Simple/Continuous with a while/when clause

It would be-

" I was writing a letter while she was cooking "

nkspbit simply says that at some point when she was cooking I was writing that letter, not necessarily all the time

Yes, it implies that.

Thanks a lot!

nkspbHelp me, please, with this sentence: "I was writing a letter when she was cooking."

More likely: I was writing a letter while she was cooking.

nkspbDoes it imply that I was writing the letter the same amount of time as she was cooking

No. There may be overlap. There was at least some time when both acti

Thanks CJ, for the answer and links.
I'd like to clarify something, please. If one says:

"I wrote a letter while she was cooking."

Does it necessarily imply that they finished writing the letter?

nkspbDoes it necessarily imply that I finished writing the letter?

Not necessarily. However, most people would reach that conclusion.

It's not a matter of applying strict logic; it's a matter of what seems most probable.

A native speaker would think that if the speaker wanted to indicate that he had not finished the letter, he would s