I'll try my best to explain the Teal'c question.
Imagine the main line is normal time. Once sam activates the time dilation, time stops pretty much for the mian line, but continues for them. They move through the line like it was normal time.
When it comes to reversing it, they all go back down the line where they came, going back in age. But, with teal'c sheilded, he loops around, but ends up at the same point as the others, so as with them, he goes back in time, but keeps his age. It's basically the same result as the others, but he takes a different route.
Imagine the main line is normal time. Once sam activates the time dilation, time stops pretty much for the mian line, but continues for them. They move through the line like it was normal time.
When it comes to reversing it, they all go back down the line where they came, going back in age. But, with teal'c sheilded, he loops around, but ends up at the same point as the others, so as with them, he goes back in time, but keeps his age. It's basically the same result as the others, but he takes a different route.
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