Don't mess with a google and use one of the rv websites that don't know the difference in towing double or triples.
ALWAYS go to your local state troop hdq and ask about legal issues regarding towing rv doubles (two trailers),
Don't do as one newby on another rv website and ask his local troop hdq if it was legal to triple tow rv's in his state (TX). Naturally he was told it wasn't. In TX its legal to tow rv doubles or double towing (two trailers) as most states.