[gen220]

Sorry, I didn't mean to suggest that the pilots were operating under conflicting regulatory guidances.

Rather, I was pointing out that the international community of aviation regulators had established conflicting norms with regards to the requirement and prioritization of TCAS at the time of the incident.

The conflict in norms was a contributing factor to the incident discussed in the article, and in the aftermath of the incident, those norms were appropriately corrected. The mention of the FAA is relevant because their original guidance (TCAS guidance supersedes ATC guidance) was what the ICAO adopted in response to this incident.