I did have a friend try to join cause like an idiot I forgot that I kept my lobby on friends only. Despite this I immediately yelled at him to get out (which I now feel bad for and said sorry for but in the moment didn't want to lose the speedrun". So then he left just as quick as he came never getting off "IN LOADOUT" status. He never landed in the map there for he was never present in my mission. This speed run is still valid.