It was before the tsunami caused by the orcas. Graham is looking around in search of someone.
Before this, he had fought against another archangel. The archangel he fought was forced to made a contract with a tamer and had no choice but to obey his master's command.
And so, Graham and that archangel fought one-on-one.
Even if the archangel was forced to fight, it doesn't mean that the archangel couldn't tell anything to Graham.
"Hey! You also got yourself tamed? We have shitty fate, huh?" the archangel asked Graham mid-fight.