Yes, it will be along these lines, you are on the right track. Potentially some differences based on whether the remote task is created on the Provider or Consumer side. I believe on the Consumer instance with a simple trigger, the remote task will be created with the after BR of "Manage task updates" which calls on the SI "SBRemoteTaskUtil". When a Remote Task is created on the Provider side, it should be calling on the Flow Designer action "Create remote task for Consumer" which then calls on the "PSBRemoteTaskUtil".
Logic is just as you wrote, however I am not certain off hand WHERE the trigger should be set (ie. After BR, flow....). I will look for more detail on this.
