Dismissive is appropriate-- "By the time the confirmation renders, the request and its replies will have crossed North America six times" 35ms times 6 is 210ms

Dismissive is appropriate-- "By the time the confirmation renders, the request and its replies will have crossed North America six times" 35ms times 6 is 210ms-- so just about physically possible with current infrastructure. But: this leaves no time for any of the hosts to do anything, or the wifi in the cafe, or whatever.