Remember Godfather III?
There was a summit meeting of the Dons on the top floor if the Trump casino.
It didn't go down too well.
This is just part of the theater of keeping enemies guessing to make it harder for an attack to be planned. They are probably smoking out rogue CIA in Singapore as part of the security planning
There is a problem with this signature comparison.
Signatures never match.
Therefore any comparison done with two signatures is a fools errand.
You should have several (maybe 5) complete recent signature examples. Then you do not COMPARE, you instead analyze to see if your subject signature, FITS WITH THAT GROUP.
If you think your subject signature is upside down, turn your 5 signatures upside down to create a NEW GROUP and once again, analyze to see if the subject signature FITS WITH THE UPSIDE DOWN GROUP.
If you want to be an investigator you have to be demanding and NOT ACCEPT SLOPPY WORK.