It seems to me that after the last patch, 1.4, that settlement attacks come in pairs. I'll get a notification of an attack, respond, and within 24 hours I'll get another notification of an attack. After the second attack, it will be days until I get another. This has happened 3 times in a row. Also, with these attacks, they always start outside of the boundaries of the settlement, rather that spawning within. Maybe it's just a coincidence, but this seems like a new pattern in the attacks. Has anyone else noticed this type of occurrence?