Surely the whole point of the "passing the baton" trailer is that there will indeed be a direct handover (split-screen, most likely?) between every programme from GMB to LW?
BBC Breakfast have sometimes done this when the 09:15 programme is live. I don't think it adds anything. It all rather follows the arrogant premise that "because we can, we will".
No, if there isn't a junction people are less likely to switch off. That's proven. That's why BT Sport began their channel without any titles or end credits through their live programming on a Saturday and instead had presenters hand over to the next ones all the way through. It was a very odd televisual grammar, but they had reasons for doing it.
Separate sponsorship deals means there needs to be a clean point between each show. They might make a bit more of a deal of it tomorrow but only likely change will be a promo of This Morning during Lorraine, which used to air in the Jeremy Kyle break anyway.