#The Great Chassis (a) can't be unlocked by either middle chassis
1 messages · Page 1 of 1 (latest)
there's literally an option on the bottom right or smth to check the full path of a specific item in the tech tree
click right mouse button on the part you want to research and it will draw you a yellow line to it. Plus, when hovering over the wanted research it is written what should be researched before.
if you need a screenshot I can help