What time did the meeting start?
How did the killer know when the victim was going to arrive at the hotel?
How did the killer know which entrance the victim would use when they entered the hotel?
“Public information?”
Nope. Not buying it.
Perhaps, from the “victim” himself:
(Another angle, we don’t know whether Thompson “had had enough” and planted the seed in his wife’s mind “threats”, and paid the assailant himself, so to go out looking like a victim.)
I'm guessing 9 am, when the business day begins; it would be unusual for a shareholder meeting to take place outside of normal business hours.
How did the killer know when the victim was going to arrive at the hotel?
There's no evidence that he did know, as he was seen waiting for several hours before the target showed up.
How did the killer know which entrance the victim would use when they entered the hotel?
Show me that he was shot headed to any other door except the main entrance and I will concede that it could be evidence that the shooter had inside information.