if then

[joham]

...they can't expect to leave until the earliest sometime this weekend, if then.
Willingham didn't worry about coaching the Irish from the shoulders down until August, if then.

Does the 'if then' have any special meaning of its own or is it just an intensifier to emphasize the time phrase before it?

Thank you in advance.

 

[joham]

I don't know what the 'if then' means in these sentences. Could anyone help me please? Thank you again.

12007FICBkJuv:MorningComesSoftly him, which he freely admitted was only about once every other year , if then . Now it seemed he was expected to show up every week in time for
22007NEWSUSAToday of this power struggle might not be determined until the 2008 presidential election , if then . In the meantime, this religious leadership transition -- often but not always conducted
32006SPOKNPR_ATCW say the Iraqis won't have the needed forces until late next spring , if then . That's when he hopes the Iraqi army troops in Anbar will increase to
42006NEWSHouston district officials in the planning for new subdivisions until the very last moment , if then . # Krueger said he finds it difficult to understand this attitude by developers since
52005SPOKCNN_Dobbs , they can't expect to leave until the earliest sometime this weekend , if then . # Now a weather problem that we usually don't see for at least
62002MAGSportingNews didn't worry about coaching the Irish from the shoulders down until August , if then . The first team meeting last January set the tone for an attitude overhaul,
72002MAGWashMonth of the reward that may only come when you're in the grave , if then . That is why, while I often criticize the sluggards and incompetents in government
82001SPOKCNN_LiveToday nomination, although no president -- it may have happened once in history , if then . But Gore is still leading the poll right now.

 

[Barb_D]

It's a short way to say "If it would even be possible at that time."

It expresses some degree of doubt on whether the thing being discussed will happen at all, let alone at the time suggested.