think across boxes

(Pretending to sound philosophical).

Look at: “…the point of the sessions is to change children’s thinking, to get them to think across boxes and ultimately help them work out how to ask scientific questions.”
If I got it right, it was meant to sound similar to ‘think outside the box’. But does it mean the same?
‘Think outside the box’ = beyond the limits of the box. ‘Think across…’ (= ’on the other side ‘ or ’ from one side to the other of something with clear limits ‘) still means ‘within the box(es)’ to me.

What do you think?

I think it probably means ‘outside the box’, but it may mean ‘from one possible solution to another completely different possible solution’ - linking all theie ideas and possibilities to come up with the most relevant points. It really does depend on greater context.