In the Logos Bible app on iPad if you have a Bible and commentary side by side, you can turn syncing off and then scroll through the Bible and at a later time simply tap on the line that divides them and they will sync. Or if you give the focus to the commentary, the Bible will sync to it. I would certainly expect the desktop version of Logos to be just as capable. I would think it rather embarrassing that it isn't. How about a syncing button just to the left of the left/right arrows so that if, lets say I have a Bible and commentary open and unlinked and I make sure the Bible has the focus and then click on the button, the commentary will sync. This would in general hold true for any resource with a Bible index. Something similar to this is requested every couple of months. Or do we have to wait for L5?