A moment in the Manly Sea Eagles and South Sydney Rabbitohs match has seen Cronulla Sharks skipper Paul Gallen reveal a tactic "every team does".
The HIA has aimed to test concussions in a bid to lessen the long-term effects of head and brain injuries on players.
However, Marty Taupau, who went off with what looked like a sore shoulder, was given the HIA test, which gave his side a free interchange.
"I've had an issue with the HIA forever and a day," Gallen said on Channel 9's Sunday Footy Show.
"In my opinion this isn't a HIA and if it is a HIA, he shouldn't be allowed back in the game because he stays down for an extended period of time. He has a neck problem here in my opinion. I'm not a doctor but I'm pretty sure it's a burner.