Can a tile setter lay tile over tile?
I’ve seen it,is the worst situation you’ll encounter.starting with trimmed doors,trapped dishwashers,trimmed kitchen cabinets to fit your fridge,taller threshold for a trimmed door(to keep bugs out) your tile will crack over time,grout joints will wear out quick, don’t have the chance to repair cracks,baseboards buried under tile,transition to other flooring will be too high,etc.