Write the response. CONVERSATION:Conversation:
Anonymous A) What was the Croxley Rail Link?;
Anonymous B) Croxley Rail Link The Croxley Rail Link, or the Metropolitan Line Extension, was a proposed railway engineering project in the Watford and Three Rivers districts of Hertfordshire, England, that would have connected the London Overground and the London Underground's Metropolitan line at .;
Anonymous A) Where was it going to be located?;
Anonymous B) The Metropolitan line's terminus at Watford Underground station would have been closed and the line diverted and extended from Croxley to Watford Junction via a reopened section of closed line.;
Anonymous A) Was this a popular rail line?;
Anonymous B) 
The main proponent of the scheme was Hertfordshire County Council but it failed to win the support of Transport for London (TfL) which owns the Watford branch.