They might be getting in through the edges of the screen frame, especially it's a shitty aluminum frame that frequently get kinks where bugs could squeeze through because people don't take them out properly. June bugs could absolutely get in through a small gap if it isn't tight in the window frame. But crane flies are also very easy to catch in a cup if you wait for them to land on the wall. I'm not sure if it's when they're near the end of their life span and lethargic but I've scooped some up in my hand and they just sat there until I tossed them outside.
They might be getting in through the edges of the screen frame, especially it's a shitty aluminum frame that frequently get kinks where bugs could squeeze through because people don't take them out properly. June bugs could absolutely get in through a small gap if it isn't tight in the window frame. But crane flies are also very easy to catch in a cup if you wait for them to land on the wall. I'm not sure if it's when they're near the end of their life span and lethargic but I've scooped some up in my hand and they just sat there until I tossed them outside.