You don't shove twice in one attack action :P
… according to your interpretation, but I’ve already provided links in this thread that show others interpret the rule in the same way as Madscientist.
Obviously, were Larian to decide to make it possible to replace an attack with a shove then they’d need to make their own call on this, with the advantage that they could ask WotC what they actually intend the rule to be!
