Complex sentence: I was only able to articulate it to myself afterwards with hindsight they thought we were using our money to make a statement about art, and really what we were doing was using our art to make a statement about money.
Split into simpler sentences: I was only able to articulate it to myself afterwards with hindsight. They thought we were using our money to make a statement about art, and really what we were doing was using our art to make a statement about money.