Geordie13: The reason why Kaeyla is so popular is not the trop of Azla-geireish but that the previous passuk ends with words YAASU ES EILEH. Since the words are similar many people say the last word of the passuk and then the first word of the next passuk.
As for the trop on KATONTI, it is a machlokes and most do not follow the GRA who says the trop is a revii and lein it with an Azla-geireish.