Whatever made you jump to that conclusion?
Just because someone dies after meeting with someone, doesn't always mean that that person was killed by them.
I oughta know, because the last time I spent with my Grandfather was his last day alive.
And I actually saw him die of a heart attack, which is something I'll never forget.
He wasn't murdered, there was no foul play involved.
It just so happened that I was just there when time caught up to him, simple as that.
And as for the Pope, I don't know all the details of what happened, but I'm 50% certain that he wasn't murdered.
My point is don't hastily jump to conclusions before all the facts are in.