One person, born in 1914 [WTS "babies born at the start of WW1"] and latter becomes part of the 144,000 meets a baby one day before he dies at the age of 101. That baby grows up and becomes part of the 144,000 and then lives to be 101. The WTS bought themselves more than 100 years with the "new light".
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No. According to the teaching, they must have been active or worked as or how you put it, remnant members for a time together, been co-working. And person 1 could not have been born in 1914, but was already a remnant member in 1914, understanding what was happening back then. Say he was born in 1880. He died in 1970 or so. At that time, person 2 must have been active as a remnant member. Born perhaps in 1940 or perhaps as late as 1950. So 100 new years are not bought, but 10-20 at the most.