I'm not quite sure what you mean by "two brackets". We started with a double elimination format, but due to time concerns dropped to single elim after the first match. Your match was played in the same bracket as everyone else's, and all matches were played in the order they were seeded in the bracket. Next week we will be starting with single elim for sure.
There were problems today. Papa dropped off the map right before we were going to start (his Canadian internet shit out), my mic was refusing to work, there was a late signup. I was not prepared and did not have contingencies in place for these things. This led to a pretty large delay starting the event and that's absolutely my fault. As for time issues, it's tough. Best of three GOIO matches tend to run about 40 minutes so there will be people waiting regardless. There are a number of possible routes (or combinations thereof) which could serve to mitigate this issue:
1) Run multiple games simultaneously. This means either not streaming some of the games, or actually broadcasting a second stream with commentary. Either way, I'm currently running the event single-handedly, and these options would require additional manpower.
2) Scheduled match times. This adds consistent wait times between matches. You would know exactly when you needed to show up, but the downside is that this increases the overall length of the event substantially.
3) No change to scheduling, but make sure the teams are more aware of the bracket's play order. All the matches are labeled alphabetically and played in that order. As long as you're within contact with your captain, you can reasonably estimate when your match will be played.
As of now, I'm not sure which is the best path to pursue. I'd be fine running matches simultaneously if I can get some people to help. Otherwise I will be working to reduce delays and get the matches starting more expediently.
My goal with this and every tournament I run is to create a competitive event that the players enjoy. I'm sorry that for you I failed; this was the first Sunday Rumble and I will be working hard to improve it going forward.