What is the approximate time between a Yammer Group creation and O365 resources syncing?

Hello,

Initially I was under the impression that when a new Yammer group was created the O365 Groups would immediately sync. A few users have reported that they have created Yammer groups and they are not seeing the O365 Groups resources show up. I wanted to check if there is a time delay between both before I proceed to opening an MS ticket. In the attached screenshot I can see that they are showing as "preparing" but it's been well over a few hours since the group created.

Thanks!