With ODI and T20 World Cups also captured in that time, Cummins was asked after the SCG win if he felt he "had completed cricket".

Cummins will likely miss Australia's next tour, admitting on Sunday he "likely might struggle" to play in Sri Lanka as he awaits the birth of his second child.

"First of all, I absolutely love what I do. That's the biggest driver in wanting to play Test cricket and work with this team and support staff," Cummins said. "I absolutely love everything about it; it's that much fun. If I can keep doing it for a while, even better."

"You always talk about [succession]. We have two vice-captains in the team. We have had three debutants in this series," Cummins said. "You're always balancing between the here and now, but have a bit of an eye towards the future.

"They are conversations we always have, but I don't think there is any point in doing things for the sake of it. Those can play out over the next few years."

Cummins' leadership in the 3-1 Border-Gavaskar trophy triumph was immense. The Australian team under his watch has often become a target for criticism, of which there was plenty after they were thrashed by 295 runs in the series opener.

Claims of fractures in the team were known to have frustrated players, after press-conference comments from Josh Hazlewood were picked apart by sections of the media. The team's preparation also came under the microscope, after Cummins and other players skipped white-ball matches in the lead up to the Tests.

But Cummins pulled the right rein at almost every opportunity after Perth, with his captaincy at its peak in the final-hour win at the MCG last week.

"When you start a series behind, a lot of things get questioned, fairly and unfairly," Cummins said. "But I think it shows a strength of the group to stay strong. Know we weren't at our best but we can be better."