"Conversation" and how many phone calls the Alleged person made during that time frame. Or when login requests came...

You have to remember I also have a fair amount of forensics ability. I used to have to go through 365 days worth of ~120MB each day of Compressed test logs. Something about correlation of data confounds even the best of us... or worst of us that never thought *ANYONE* kept thier butt covered THAT long.

zcat is my friend, as well as grep -e and sed-n-awk