IM sure Shinkawa got inspiration from NAgano. The other way around. Nagano literally set up the base inspiration of all the gundams and robots when he was in Z gundam series as head of the mechanic designer. Bandai totally ignored his genius of course I understand that Bandai didnt have technology like today to make Nagano's design as model kits. Too bad that ruined their relationship. Nagano won't give bandai rights to produce his genius designs.