"The TV program ended while I did not know entirely."
This sentence looks grammatically correct but doesn't sound right to me. Can anybody help me with the usage of "while"? When and when not to use "while". Or what conjunction best suits the sentence. Thank you.
Actually, that is my Japanese friend's sentence. I asked her about it and what she meant was she was doing something else so she did not know about the TV program entirely because when she decided to watch the TV program again, it already ended.
Can you help me rephrase the sentence using another conjunction? Thank you.