Who is this actually happening to? If I or someone I live with have a friend over for that long, we/they’re probably doing something. If there was anything close to small talk with a roommate coming by, its “Hey! Wanna join us?”, to which “no thanks” is always a fine answer.
Usually the screenings are pretty thorough. I’ve gotten one at least once a year (usually 6 months) for as long as I’ve been an adult.