A GitHub pull request or GitLab merge request under review which is not showing progress when compared to the team's usual review delay indicates a problem:

• The contribution may be doing too much, making it hard to review or test.

• The contribution may impact areas of the codebase which the team is less comfortable with.

• Some conversation may be required to reach an agreement and progress on this contribution.

All these can delay other works, and hinder the entire's team output while this item captures some attention.