I have finally seen the last episode of SG1, Unending. However I don't understand exactly how the time dilation worked and why Teal'c had to stay older. If Teal'c could stay within a shield while everything else reversed in time, why couldn't they simply have prepared a video with all relevant information like in Moebius and let it be excluded from the time reversal?
And did the dilation signify that within the span of one second fifty full years passed as it would in normal time? Can one imagine why it took Sam 50 years to figure out how to do it?
The jump from three months to 20 years seemed rather abrupt when it brought on the death of Landry, and then another jump of 30 more years. I guess while Daniel was matched up with Vala Cameron must have been matched up with Sam, but Teal'c.......???