It is actually not possible to determine the answer to that, since neither language has a written record in antiquity.
Swahili is primarily based on the Bantu language, with influences from Arabic, Persian, Portuguese, English, and other languages.
Swahili.
Swahili vocabulary springs from the Arabic language, made through more than many centuries of exchange with Arabic-speaking peoples
Kiswahili or Swahili
Swahili
Swahili.
The Suahili language evolved from Bantut and Arabic.
Swahili is primarily based on the Bantu language, with influences from Arabic, Persian, Portuguese, English, and other languages.
Swahili.
swahili
Swahili vocabulary springs from the Arabic language, made through more than many centuries of exchange with Arabic-speaking peoples
Same thing it means now: the language Swahili (Kiswahili in the language itself). It comes from the Arabic for coast.
Swahili vocabulary springs from the Arabic language, made through more than many centuries of exchange with Arabic-speaking peoples
Swahili
Kiswahili or Swahili
Arabic
Swahili