Flamestrike
Legend
I think the time between the PT and OT should have been longer than 18 years myself. It's never felt like a long enough time for me.
It was 19 years between RotS and ANH.
The Galactic Empire was proclaimed in 19 BBY and it fell 23 years later in 4 ABY.
Anakin Skywalker was born on 41 BBY; he was 9 years old when Qui Gon found him, 19 years old at the start of the Clone wars, 22 years old when he fell to the Dark Side and Luke/ Leia were born, and was 45 when he died.
Canonically Obi Wan was 16 years older making him 38 when he duelled Vader on Mustafar, and 57 years old when we meet him again on Tatooine.
Alec Guinness was 63 years old when he portrayed 57 year old Obi Wan so it wasn't that far beyond the pale.
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