Salisbury5 -
ThisDJ may be right, depending on the day of the week. When I looked at this the other day DL1412 was showing Thursday and Friday flights going into B1, as I said. But it looks like flights today and tomorrow (Saturday/Sunday) are arriving into E26. Oddly enough, on Saturday/Sunday DL1258 ATL-SYR departs from B1!
Not sure if this is a true change that just happened to occur now, or if this is a standard weekday/weekend variation. If this is a day of the week thing, you'll probably be OK on the weekdays connecting B1/B21. But if it's a Saturday or Sunday, a 35-40 minute E26/B1 connection will be difficult, if not impossible.
If you want to check as the day approaches, you can enter the flight number on the first page of delta.com and check the details for flights that day or the next.