FWIW My most recent SBR, submitted Oct 27, approved Nov 25.
On Wednesday's they take down the eFile system for like 12 hours specifically "to allow agents unrestricted access to the efile system to process". Basically so they can do their thing without outside users slowing the system down. This also means approvals are almost always on Wednesday's. Looking back all of my efiles came back on Wednesdays. You'll receive an email with the approved paperwork attached as a PDF hours before the system goes back online. My approval came about 9:40am.
On Wednesday's they take down the eFile system for like 12 hours specifically "to allow agents unrestricted access to the efile system to process". Basically so they can do their thing without outside users slowing the system down. This also means approvals are almost always on Wednesday's. Looking back all of my efiles came back on Wednesdays. You'll receive an email with the approved paperwork attached as a PDF hours before the system goes back online. My approval came about 9:40am.