Spartan R41:It's possible, but doubtful. They would possibly know as much as 343 Guilty Spark, which is perhaps why they only communicate to the Prophets.
Engineers gain more knowledge when there born(made) because if you have 2 engineers making one then m=both of those engineers will give the new 1 all there knowledge so the more engineers means more knowledge so the chances are they where used to help build tha halos and such so the knowledge would be passed down through the generations engineers know more than the halo monitors as engineers have there own language that very few can understand while monitors can talk english or any other language(i guess)
But the problem is with the engineers on the ark theory is that there where no engineers on any of the halos ( as far as we know) as non of ever been mentioned by AI or human/covenant so the chances of them being on the ark are slim though still possible.
and if you add the dam engineers where still in HALO CE's code then i;ll rip your arms off as they had no reason for them 2 be in game so they where taken out also why they wernt in the other games, until halo wars n then ODST where bungie decided to finally add a new enemy to the game and thats the best they could come up with
Aloysius:If you think about it, Galactus is a giant purple alien who eats planets. Kind of like the Covenant.
wolver frog
It's official, straight from the mouth of an employee who works on Halo.
The Covenant eat planets.