Auto-Schedule in Adv Roadmaps Plans versus Calculation of schedule in Adv Roadmaps Program

[david.hiatt]

In reviewing some documentation, I get the idea that the program is not just an aggregation of plans, but may calculate differently: 

Taken from the atlassian page linked below:

• The end date of a plan's timeline will be the latest possible target date from the issues assigned.
• In the scope view of a program, the target dates of the issues in a plan will be shown as the scheduled start and scheduled end dates.
• In the schedule view of a program, the schedule will be handled in this priority: Target dates first, then sprints, and then releases.
• Once a plan that's using the improved interface is added to a program, the Calculate button in the schedule view will change to Sync.

https://confluence.atlassian.com/jiraportfolioserver0323/programs-998894392.html

Is this different than how a schedule/roadmap is calculated and rendered in an Advanced Roadmap plan?  Is there a nice bullet list to explain the calculation of plans to look at alongside this neat bullet list for program?

Thanks!