Comment by woadwarrior01

       (myObject as! SomeProtocol).someMethod()
   

The `objc_msgSend()` call you're observing in this case is likely a call to `NSObject::confirmsToProtocol`[1], are you absolutely certain that NSObject is not involved anywhere in your class hierarchy?

[1]: https://developer.apple.com/documentation/objectivec/nsobjec...