The texts were ALL during the 8:01 minute because otherwise the phone would show the time change!
This is pretty simple!
Where the texts were made at a different times, the phone shows the time!
ETA: It's nothing to text 5-10 times during the same minute. I guess I really don't see how this can even be construed as questionable!
Do you have a link to something that says time stamps work that way? TIA