I don't know about the half-link, but when I tried to put an SRAM masterlink onto a KMC chain, it wouldn't fit. The KMC chain was just barely wider than the SRAM link so it wouldn't snap together.
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Reason is a scoundrel, stupidity is direct and honest. –Ivan Fyodorovich Karamazov
Man's mind, once stretched by a new idea, never regains its original dimensions. –Oliver Wendell Holmes