I joined the virtual both days this weekend. On Saturday, by the time we joined the estimated time for our boarding group to be called was some 5+ hours later, which was fine but did require some rejiggering as we originally planned to be in California Adventure by that point. When we were called, we did go through the line, but it was not too long at that point.
On Sunday, I joined the queue at around 9:45 and was given an estimated 2+ hour call back time. We arrived and ended up going through the entire setup which snaked around using the Jungle Cruise area—up the stairs, down, then back up to go down again, etc. After 45 minutes of line walking, we reached the front of Indy and bam, it went down. They told us we couldn't try waiting a bit more due to Covid, so had us all exit. Meanwhile, nothing was told to others waiting outside, I'm assuming as it was ok for them to just keep waiting outdoors. They put a Multiple Experiences replacement pass on our tickets (good for most all DL rides except Peter Pan and anything in Galaxy's Edge) and told us we could return once it was back up running.
We did return before leaving and thankfully they let us head to the ride going back through the exit, so we didn't have to wait at all. But there were definitely a lot of complaints earlier in the day. They either need to stop calling so many boarding groups at once or make clearer that the queue just gets you a spot in line, but doesn't work like Maxpass. I don't think anyone around me expected to have to wait 45 minutes in line with a boarding group! Even on ROTR both days, we sailed through to get to the ride.