The Canadian Open is only 3 weeks after the PGA, and weather will not be an issue by early June... of course 21 days is quite a bit at that time of year.
But with the schedule being as follows, as a fan of Canadian Golf I can certainly see more players taking a short trip from Columbus to one of Canadian courses that players really like (Hamilton GC).. only unfortunate thing is that the US Open is in Pebble Beach, so it makes a long trek accross the country for a tourney where guys like to arrive on Monday. Either way better than 2018 and prior years, where the Canadian Open literally had the worst spot on the tour... after the British Open, and surrounded by 2 Masters and 1 WGC event,
2019
Nelson
PGA at Bethpage
Colonial
Memorial
Canadian Open
US Open
2018
British
Canadian
WGC - Akron
PGA
Once the Canadian Open starts to align tourneys with the timezones of the US Open it will really help.