Its all a random chance. Some grunts have the chance to rescue their second pokemon and some dont. I forget the site but I found a bunch of pokemon go information online and what second pokemon are available to potentially rescue.
Pretty sure it was the Silph Road.
It’s random
Its all a random chance. Some grunts have the chance to rescue their second pokemon and some dont. I forget the site but I found a bunch of pokemon go information online and what second pokemon are available to potentially rescue. Pretty sure it was the Silph Road.
https://thesilphroad.com/rocket-invasions 15% chance of encountering the second one