How to fix "Operator && cannot be applied to operands"

ButtonMonitoring.PressL1 && ButtonMonitoring.PressL2 //ERROR BECAUSE in the methods have to be called with "()"
//Error 1   Operator '&&' cannot be applied to operands of type 'method group' and 'method group'


ButtonMonitoring.PressL1() && ButtonMonitoring.PressL2()