The intrinsic resistances of transistors will act in parallel, so overall output conductance increases.

Thank you

Mohammad Sajid Nazir

When any two transistors are connected in parallel then it is not a Cascode configuration. In parallel connection conductance increases as mentioned by Mohammad Sajid Nazir. However, it should not be confused with Cascode connection where another transistor in common gate configuration works as a load for a common source transistor.