So I'm quite happy at my company and my manager is ok to pretty good for the most part.
There's two of us with the same role but with very different responsibilities. Now this has happened organically and my colleague is very pushy of "how different" our roles are.
I like how different my role is BTW, I get to do a bit of everything and get exposed to different departments.
The things that I don't like about my role are the things that my colleague thrives at (like taking notes...) However, I'm still in charge of MUCH bigger accounts and nothing has ever gone south (like her accounts have).
She does mention ALL the time about how she's busy with our core responsibilities and I'm not.
Our manager is VERY aware of how different our roles are and she's always saying to be cautious about not offering to help too much as she worries about my bandwidth.
Would you ignore it? Or talk to your manager about it?