In theory, this can be easily done based on UK2Node_Tunnel. You need to link them to each other, bypassing UK2Node_Composite (it is a child of UK2Node_Tunnel).
During the compilation process, the pins will simply reconnect to each other, as happens with the Composite node.
If there are unconnected Execute pins on the input side, the compiler will report that the data will never be calculated on the output side.
But again, I repeat, this is only theoretical. 