Filed from 2 published puzzles

ATHEEL

Set to 2 different clues across 2 published puzzles, most often “Close behind” — The New York Times, Friday, 3 April 2009.

6 letters

Every clue on record, most used first

Close behindonce
The New York Times — Friday, 3 April 2009
Following closelyonce
The New York Times — Friday, 11 March 2005

Other answers to these clues

APING5 letters
HOTONTHEHEELSOF15 letters