I did not know about it until you tell me vs I did not know about it til you told me

Some examples from the web:

• I did not know about the sales figures.
• Maybe these things happen for a long time, I just did not know about it.
• I did not know about the bodies.
• We jammed your radios... with a special device even I did not know about.
• But I am telling you now... I did not know about Emma until tonight.
• And before you even ask, I did not know about the $10 million.
• I did not know about Ivy, but -
• Mr President, the fact is that I have received the proposal for a law concerning a voting right for Gibraltar from the British House of Commons, but only after I put this question - I did not know about it before.
• When you said you did not know about it you lied.
• Secondly, if you have known since 2005, how come the European citizens did not know about it?
• Anyone perhaps whom the police did not know about.
• We did not know about this life system.
• They did not know about disease until the white man came.
• We did not know about Skywriter - all these different programs run by U.S. intelligence agencies.
• My parents - they did not know about the boy.
• According to my contact, the CIA did not know about Matty until after he was murdered.
• Because they did not know about radioactivity, and were not informed about it, some members of staff at the Woippy marshalling yard, in the Lorraine region, used to gather round these heat-generating carriages to keep warm in winter.
• Is it possible that the local authorities did not know about it?
• How is it possible that I did not know about this?
• I remember as a boy I could understand, although I did not know about politics or international affairs, that when that man said, "I am a Berliner", he said something deep and meaningful in terms of solidarity at that time.

Some examples from the web:

• I did not know about the sales figures.
• Maybe these things happen for a long time, I just did not know about it.
• I did not know about the bodies.
• We jammed your radios... with a special device even I did not know about.
• But I am telling you now... I did not know about Emma until tonight.
• And before you even ask, I did not know about the $10 million.
• I did not know about Ivy, but -
• Mr President, the fact is that I have received the proposal for a law concerning a voting right for Gibraltar from the British House of Commons, but only after I put this question - I did not know about it before.
• When you said you did not know about it you lied.
• Secondly, if you have known since 2005, how come the European citizens did not know about it?
• Anyone perhaps whom the police did not know about.
• We did not know about this life system.
• They did not know about disease until the white man came.
• We did not know about Skywriter - all these different programs run by U.S. intelligence agencies.
• My parents - they did not know about the boy.
• According to my contact, the CIA did not know about Matty until after he was murdered.
• Because they did not know about radioactivity, and were not informed about it, some members of staff at the Woippy marshalling yard, in the Lorraine region, used to gather round these heat-generating carriages to keep warm in winter.
• Is it possible that the local authorities did not know about it?
• How is it possible that I did not know about this?
• I remember as a boy I could understand, although I did not know about politics or international affairs, that when that man said, "I am a Berliner", he said something deep and meaningful in terms of solidarity at that time.