Two points. First, the PST thing is an artifact of bad website programming. The words "pacific time" are hardcoded in the html sent to the browser. The times of the calls are NOT hardcoded digits, they are universal time representations that are converted to local time by the local browser. Long story short, the call+log.pdf file is showing FL times.
The other point is that some of those calls overlap, and it is impossible for all of them to be DeeDee. For example, there is a 1-minute incoming call at 7:04, completely contained in the 6:54+18 minute incoming (probably DeeDee) call.
There are also overlapping calls out to North Dade. A 6:45+5 in combination with a 6:46+2. The 6:46-6:48 call is entirely within the 6:45-6:50 window, no matter how you do the rounding.
Except... the time zone on the cell bill is PST/PDT. So the time doesn’t match up. There is a 3 hour difference. Ruh-roh.