Jacob 18-years-low/working years in scripture or history?

Now from my fuzzy memory of scripture, Jacob had to
work for seven years before he could marry Leah and
another seven before he could marry Rachel. So
for a long while I was assuming that he had a period
of 14 low/working/wilderness years, similar to Rama.

However more recently I have divined that Jacob
had 18 low/working years, the most of any human
(and the same as 9 cetaceans) in the last 10,000 years.

So is there any evidence in scripture or in history
of the extra four years, or total of 18 years,
rather than 14 years??

-- 
David Dalton [email protected] https://www.nfld.com/~dalton (home page)
https://www.nfld.com/~dalton/dtales.html Salmon on the Thorns (mystic page)
“And the cart is on a wheel; And the wheel is on a hill;
And the hill is shifting sand; And inside these laws we stand" (Ferron)