UML22 — Connector - Constraint [2] is inprecise

2] If a connector is attached to a connectable element which has required interfaces, then the connectable elements attached to the other ends must realize interfaces that are compatible with these required interfaces.

What is the meaning of this constraint ?

• For each required interface I1 of a port P1 attached to a connector, every other port connected to the same connector must have at least one provided interface which is compatible to I1 ? - For each required interface I1 of a port P1 attached to a connector, there must be at least one other port connected to the to the same connector with at least one provided interface which is compatible to I1 ? - ....

see above