1970, Bernard K. Muganda, Kusema KiSwahili (Drum & Spear), page 25:
The is a difference between the “Nge” and “Ngeli” tense. The “Ngeli” tense will be discussed later.
ngeli, in an English context, italicised as if a loanwordedit
1990, Johannes Fabian, Kalundi Mango, Walter Schicho, History from Below: The Vocabulary of Elisabethville by André Yav : Texts, Translation, and Interpretive Essay (John Benjamins Publishing), page 53: (quoting or quoted by Jae-Ick Park in 1995 in Minimality Effects in Swahili in Theoretical Approaches to African Linguistics (Africa World Press), page 296:)
[…] (e.g. the na, li, ta, me, mesha, ngeli, nge tenses), […]
There is just one example for the use of an infixed morpheme for [conditional], {ngeli}, combined with the ShS surface element for [conditional] “kama.”