What if a titan shifter eats another shifter?

This topic is less about the power combination but if they eat another shifter does their time as a titan wielder go back to 13 years or how would it work?

https://redd.it/1lt7dwk
@attack_on_titan_topic

It's been exactly a year since I have watched this anime and I'm still not over it...

https://redd.it/1ltega6
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Never letting you guys forget about this

https://redd.it/1ltdgw4
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Attack titan regeneration (stop motion)

https://redd.it/1ltgw3w
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Did anyone had suspicions on Reiner and Bertoudlhutou from Season 1?
https://redd.it/1ltjs1u
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AoT in 2025… not
https://redd.it/1ltk70i
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Jaw Titan # 2 (Pacman Titan)

https://redd.it/1ltkjwa
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Armin the ultimate rizzlord
https://redd.it/1ltlghc
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Would you rather Levi vs Erwin.
https://redd.it/1lto57v
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The big guy has been finished.

https://redd.it/1ltp6df
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Oh naw
https://redd.it/1ltmi6m
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What’s it ever stated what happened to this girl? From: Wall: Assault on Stohess, Part 3
https://redd.it/1ltomzn
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One of the luckiest moment of my life was not getting spoiled for Reiner & breadroll betrayal scene

https://redd.it/1lttt4z
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