We previously suggested that the order-order transition of the reported pPheOzi-based triblock copolymers is due to a nonclassical interaction between hydrophilic and hydrophobic polymer blocks. Due to the complex nature of polymers in solution, however, the underlying specific interaction remains to be verified, with consideration being given to the involvement of the amide functionality of the poly(2-oxazoline) (POx) and poly(2-oxazine) (POzi)-based hydrophilic blocks.