[Richard777 (OP)]

Did the collapse of D₁₂ enable the Hyksos rise to power?
See attachment.

[Richard777 (OP)]

Assume the “typical lifespan” of a Hebrew person at that time was approximately 60 years. This would imply that four generations of Hebrews lived in the land of Goshen during the twelfth dynasty. This agrees with scripture (Genesis 15:16) which says; “But they will return here in the fourth generation”.

[Bored chemist]

I think you say the dynasty lasts 225 years.
That's arguably about 10 generations.
Most of us don't leave it until we are 60 before begetting the next generation.