No, you didn't misunderstand, & yes, that's very likely what caused this. Some people insist their snakes have no problem with "multi-tasking" because they just haven't seen it yet- some snakes do better than others, & members giving advice here may only have one or a couple of snakes. The more snakes you live with or the more years you have doing so, the better experience you have to share, so like everything else in life, consider the source you listen to.They mean well, & it would appear they prefer to keep to a "feeding schedule" & risk their snake having a terrible shed.