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Alex,
the footage doesn't have a delay because it was recorded on one side (Earth)..
Imagine, someone is at the Moon and you are talking to him. The moment he is finished (his voice reaches you), you reply to him, and that was recorded.
He keeps on talking.. you keep replying or commenting.. and so on. No visible delay between talking, sometimes even overlap would occur.
The delay (~two sec) is expected if you ask him something specific and he replays to your request. But the presence of the delay depends on context of the discussion.. Noone is really waiting for the answer to arrive, to continue with talking. Otherwise, this would have been one very in-efficient discussion.
I am very slow with keypad... So when I "talk" to someone on, say, Yahoo messenger, there is a considerable delay in individual questions/replies.. but my reply is applicable to the before-previous message from my correspondent, and vice versa.
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