Wuxia stories, particularly Jin Yong's, tend to have large casts of characters. Often, two characters who appear extensively in the same novel somehow never cross each other's paths. Some examples:
Kiu Fung and the Siu Yiu Sect Elders
Chung Man Sau and Kau Mor Tze
Genghis Khan and East Heretic Wong Yerk See
Muk Lim Chi and Princess Hua Jeng
The Gong Nam 7 Freaks and South Emperor 1 Deng
Gwok Jing and Gung Sheun Tze
Fok Do and Lee Mok Sau
Dat Yee Ba and West Poison Au Yeung Fung
Cheung 3 Fung and Tse Tsun
Granny Golden Flower and Mo Dong 7 Heroes
Mit Jeut See Tai and Yan So So
These characters had extensive appearances in the same novels, but somehow never encountered each other.
Which other non-meetings between characters in the same novel do you think might have been interesting?
Caveat: don't pick meetings between characters whose appearances in novels were so brief that it isn't at all noteworthy that they didn't meet (how could they if they got a page or less of facetime at opposite ends of a novel; for example, there's no possibility that Gwok Siu Teen could ever have met Muk Lim Chi during LOCH because Gwok Siu Teen died before Muk Lim Chi was even conceived). Choose characters who had many appearances in the same novel, were alive at the same time, and *could* have met, but somehow never did.