It's the second time on tour that Gatland has talked about the actions of opposition players in a bid to put it into the minds of the officials. Last week he spoke about the blocking off-the-ball tactics of some New Zealand teams.
Hansen responded by saying such talk was tantamount to bullying the officials, but Gatland is clearly undeterred. He said he would also seek "clarity" over the All Blacks' sacking of the Lions lineout.
"[But] there are lots of things we need to concentrate on ourselves and fix," he said.
Gatland, happy to give his squad a relatively clean bill of health despite the torrid nature of the first test, also had a swipe at the All Blacks' game plan at Eden Park, saying his side would have probably have been criticised had they won with such a direct, physical mindset.
"They didn't really play Champagne rugby did they? So if we had played that way and won the game it would have been interesting to see the reaction. Look, you have to take your hat off to them.
"I said to the players, don't expect them to be expansive because as a Kiwi I understand what the mindset is, and sometimes that's to stop the strength of the opposition; to stop our line speed... our driven lineout, and to be prepared at some stage to have a crack at our scrum and they did all those things and were very physical at the breakdown."
He added: "There were lots of things we did really well. The disappointing thing is that we were probably dominated in the collisions in terms of attack and defence, it was simple as that, and we need to improve that this week."
Gatland admitted this week was a huge one in the context of the tour. On Tuesday they play the defending champion Hurricanes before attempting to overturn the first test result in a bid to keep their series hopes alive.
"There's no hiding away from the fact that this week is very important for us. The need to get a good performance, a good result, on Tuesday and then to build into Saturday is going to be pretty crucial for us."
British and Irish Lions side to face the Hurricanes:
1. Joe Marler, 2. Rory Best (c), 3. Dan Cole, 4. Iain Henderson, 5. Courtney Lawes, 6. James Haskell, 7. Justin Tipuric, 8. CJ Stander, 9. Greig Laidlaw, 10. Dan Biggar, 11. George North, 12. Robbie Henshaw, 13. Jonathan Joseph, 14. Tommy Seymour, 15. Jack Nowell
Reserves: 16. Kristian Dacey, 17. Allan Dell, 18. Tomas Francis, 19. Cory Hill, 20. George Kruis, 21. Gareth Davies, 22. Finn Russell, 23. Jared Payne