Honolulu is 12 hours behind Budapest
There is no standard 8-to-6 overlap. Someone joins early or late.
Given Honolulu is 12 hours behind Budapest, the realistic answer is that there's no convenient shared slot during normal business hours. Catch the edges of the day: the last hour for Budapest or the first hour for Honolulu is usually the least painful option. The window above shifts seasonally: Budapest keeps daylight saving while Honolulu ignores it.