Mihawk want to measure distance strength between Whitebeard him and me thing.
Rhen we see Whitebeard spam earthquake shockwaves which it can travel other island in second , create giant waves to dwarf island ,which it mean peopke felling earthquake.
‘Mihawk cut big ice .
‘’Mihawk didn’t fight Whitebeard because admirals already fought Whitebeard, so he doing other stuff like fighting vista, and chasing luffy.
Then it is plot protect Whitebeard from dying earlier , when Akainu and Whitebeard first started, they fight fight, Whitebeard got heart attack , then Akainu punch his heart/chest . Then Akainu leave Whitebeard who is in defenseless mode with no reason but leave random fodder marine to deal Whitebeard.
‘Akainu should remove Whitebeard face at the start but plot reason.
One piece rule 305: slabbing people hearts doesn’t kill it . Cut head off or remove it kill one piece character.