I am not seeing a change due to the hate list. However; it does seem the skillchain window (both opening and closing) has shifted to the right two seconds.
I believe the statement from Byrth above to be correct.
"First WS -> 3-10 seconds later -> Second WS -> Skillchain 1
Skillchain 1 -> 3-9 seconds later -> Third WS -> Skillchain 2
Skillchain 2 -> 3-8 seconds later -> Fourth WS -> Skillchain 3"
I performed several skillchains, moving the blue spell around.
First; Requiescat -> Chain Affinity, Heavy Strike -> Expiacion. My testing showed the following times;
First WS -> 3-10 seconds later -> Second WS -> Skillchain 1
Skillchain 1 -> 5-11 seconds later -> Third WS -> Skillchain 2
Next; Fast Blade -> Red lotus Blade -> CA, Barbed Crescent -> Red lotus blade I observed the following;
First WS -> 3-10 seconds later -> Second WS -> Skillchain 1
Skillchain 1 -> 3-9 seconds later -> Third WS -> Skillchain 2
Skillchain 2 -> 5-10 seconds later -> Fourth WS -> Skillchain 3
Last just to check I completed the skillchain listed above; Immanence Aero > Immanence Noctohelix (Gravitation) > Chain Affinity Barbed Crescent (Darkness) > Wildfire (Darkness) by adjusting what appeared to be the window opening on the skillchains addon and waiting 2 seconds.