Hendon failed to capitalise on the top three all dropping points as they drew 2-2 at Hampton & Richmond Borough.
The Greens took the lead twice, first through Kezie Ibe in the 19th minute, and again through Aaron Morgan in the 67th minute, only to see Charlie Moone equalise in the 59th and 85th minutes.
With Maidstone drawing, and Margate and Dulwich both losing, it means the Greens missed out on a chance to really close the gap on the trio above them in the table.