I get it, worked like crazy for HW for over 2 decades creating success for our group. Since I wasn't in the "in" crowd the rewards were lukewarm near the end.
When you're extremely techical no one but you knows how long or difficult it will be to implement the program. Why not pad it so you can relax while meeting EEI?
Since I left before receiving my band 4 bonus, just spent the last 6 weeks at home doing repairs. Gave management bunch of tech jargon about documenting my work before I left. So HW paid for my bonus without knowing it.
They don't care about you so take advantage where you can.