40 minutes... Congratulations! 
Mine took all day. 
PO epoxied? the steel ( not stainless ) Lag screws in. They rusted and snapped off. Three drill bits and one easy-out later I gave up and re-drilled them 1/2 inch offset. Old screws are hidden under toilet flange so it looks OK. Now on to the remaining hoses.. 
Mine took all day. PO epoxied? the steel ( not stainless ) Lag screws in. They rusted and snapped off. Three drill bits and one easy-out later I gave up and re-drilled them 1/2 inch offset. Old screws are hidden under toilet flange so it looks OK. Now on to the remaining hoses..