Can I jump to the previous/next keyframe but ignore Grease Pencil keyframes?

I’m using a shortcut for the Jump to previous/next keyframe function, but when the scene’s Grease Pencil is visible, Grease Pencil’s keyframes are also in the timeline.

It interferes in jumping between keyframes of an object I am animating.

When I turn off Grease Pencil, the keyframe markers disappear. I can jump to only my object’s keyframes again, but I lose the scene’s Grease Pencil in the viewport.

So, I want to see the scene’s Grease Pencil in the viewport but not see it’s keyframes in the timeline.

Are there options to enable this?