The MAX does have flattened cowlings, though the effect is less pronounced than on the NG. Compare the MAX (right) to the completely round cowling on the A320ne

The MAX does have flattened cowlings, though the effect is less pronounced than on the NG. Compare the MAX (right) to the completely round cowling on the A320neo's LEAP-1A: https://leehamnews.com/wp-content/uploads/2020/11/737NG-vs-MAX-nacelles.png https://leehamnews.com/wp-content/uploads/2020/11/737NG-vs-M... https://aerocorner.com/wp-content/uploads/2020/01/Aegean-Airbus-A320neo-frontal-1140x641.jpg https://aerocorner.com/wp-content/uploads/2020/01/Aegean-Air...