It's being labeled as "consensual contact" once the summons is signed and the ID is handed back to the driver.
I would contend that the "second" encounter is a continuation of the traffic stop, and the officer cannot force contact by making a traffic stop on one violation and then make it consensual just because a summons is signed and the OL is returned.
I would especially contend that fact if the officer's emergency equipment (lights specifically) is still activated, a visual signal of arrest. Then I would contend that if the officer is still marked out (by radio or mobile data terminal) on the traffic stop, the officer is still engaged in the enforcement of the previous infraction.
You could parse it down to if the officer turns his emergency lights off while stopped on a highway of the Commonwealth, 46.2-960 is being violated, and all applicable local and state parking / stopping on the highway laws.
I just do not understand how a traffic stop can evolve into consensual contact. This false split would not lead a reasonable person to believe they are free to go, thus not making it a consensual encounter.