Sure. Under the old G+ system, you could book your first LL at 7am the day of your visit and then book additional LLs every two hours starting two hours after park opening. No one could book any LLs in advance, so the entire pool of LL return times was available to everyone starting at 7am. And there were no tiers and no set upper limit to the number of LLs a guest could hold at once (though the number of hours in the day would naturally constrain that anyway).
Someone planning to arrive in the parks by mid or late afternoon, for example, could book a their first LL sometime between 7am and park open, another at 2 hours after park open (so 11am for all parks except AK), another at 1pm, and another at 3pm. To be clear, I'm talking about when they did the actual booking, not when the LL return time was scheduled. This "stacking" strategy would give them 4 LLs waiting for them when they walked into the park around 3. And if they were savvy (and lucky) enough to book their earliest return time last, they could book again immediately after tapping into their first LL, since using their most recently booked LL would free them from the 2 hour rule.
By contrast, under LLMP now, guests can always hold 3 LL slots. No more, no less. Stacking is dead. And with the ability to preselect those initial 3 LLs days in advance, the pool of LLs available for booking on the day of visit has shrunk considerably. By the time a late arriving guest taps into the park in the afternoon, most desirable LLs have been snapped up by guests who used their prebooked LLs earlier in the day and refilled their slots with additional selections.
