回複：如果等排期沒結婚的朋友可考慮和以下人結婚

if intend to use cross-chargability, the premise is that the 外國港澳台-born spouse needs to adjust/CP with you. They need to get GC based on the same immigration petition with you.

So if marry 外國港澳台 GC holder, it won't help you at all.