My understanding is that prior to the day, the system restricts the amount of time that booked lightning lanes can overlap. I've also heard that when you are booking lightning lanes and haven't yet purchased, you can modify them to overlap more than you can after you've purchased.
Has anyone been able to figure out the exact logic of what amount of overlapping is allowed?
Are single passes treated the same as multi-pass attractions when restricting overlap? I have a MK plan that would require bookings of Dumbo at 9am, Seven Dwarfs at 9:30am, Jungle Cruise at 10:30am, and Pirates at 11:30am, and am trying to determine whether the system will allow me to do this.
The most detailed video I've seen on multipass is the Mammoth Club one (https://www.youtube.com/watch?v=r0x2jedmxDM&t=702s), that goes into quite a lot of depth, hopefully it will give you an idea.
"Are single passes treated the same as multi-pass attractions when restricting overlap?"
Yes they are and it also takes into account any dining reservations you have as well, so that's something else to bare in mind.