Night Owl

I know it's not a good plan to book the last flights of the day, so now I'm trying to be proactive in case there's a misconnect on my OAK/ SLC/ATL flight later in the month. If there's a delay in OAK, I would have a better chance of being rebooked there than SLC. Would DL rebook me out of SFO later in the day? I get to SLC at 3:47 and have more than enough time to make the 5:00 to ATL. My concern is being rebooked on the last flight, which gets me home at 6:00 AM. Many of you have said it's always a good idea to have an alternate schedule in mind in case of a bump or reroute, but I can't find anything out of SLC. Would I be stuck on the redeye, or would DL rebook me on another airline?