This is doubly interesting cause Harras seems to have had warm feelings for Mackie, going as far as suggest Mackie does Ultimate Spider-Man!
“He (Harras) was mocked by Joe Quesada for recommending the likes of Howard Mackie of[sic] Scott Lobdell to write Ultimate Spider-Man for Bill Jemas, only for Joe Quesada to suggest Brian Bendis – a move that may have made Quesada’s career. But at the time Bendis was the risky choice, Mackie the safe one.” —Rich Johnston, 2010, https://womenwriteaboutcomics.com/20...ry-in-collage/
And ofc, Mackie had work at DC after Harras became EiC