Picked up and assembled (8)
I believe the answer is:
gathered
This clue is a double definition.
'picked up' is the first definition.
(I've seen this before)
'assembled' is the second definition.
('gather' can be a synonym of 'assemble')
'and' is the link.
(Other definitions for gathered that I've seen before include "Concluded from evidence" , "Surmised" , "Gleaned" , "Picked up" , "Understood" .)