As Rosemary points out, intra-continental travel is often further complicated by having to travel out of the continent in order to reach a destination within Africa.
Bí Rosemary ti sọ, ìrìnàjò nínúu ilẹ̀-adúláwọ̀ máa ń gba ṣíṣèrìnàjò kúrò ní ilẹ̀-adúláwọ̀ kí aṣèrìnàjò ó tó le è dé ibi tí ó ń lọ ní àárín Ilẹ̀-adúláwọ̀.