The connection level is an indicator of your relationship with various characters. It rises whenever you complete deliveries that characters have requested or have returned lost cargo that belongs to them.
Chiral Communication Traffic
Upon increasing the connection level, the maximum number of chiral communication traffic at a facility will rise. Chiral communication traffic is expended whenever you build facilities and structures within an area’s chiral network. This means that raising the connection level allows you to construct more installations. The amount of materials that can be stored will also increase.
New Features and “Token of Gratitude” Items
You can unlock new features at the Bridges headquarters by increasing the connection level. Certain characters will also send “thank you” items for reaching certain levels.