Gladio looked very confused as to why a sand monster would remind Ignis of something like that. And 'other' team lead? There were others? He had thought it was Ignis alone. Though it became clear after Ignis had spoken why he was suddenly reminded of team leads when speaking of sand monsters.

"There are other co-leads?" He asked carefully, unsure if he was understanding Ignis or not... and if he should have been hurt his friend had asked someone else before him. Though he supposed it would make sense. Eos was a long way from here. Their friendship was mainly there, after all. Ignis was much closer to the people on the train than he had ever been with him, it felt. But he gave a slight shrug of a single shoulder before he lifted his cup to his lips and drained it. "... Whatever you want, Iggy. Won't change what I do."