Hear and Read are a pair
Hear is the spoken interpretation. Read is the words on screen. You can Hear Yoruba and Read English, or the other way around.
Yoruba, Igbo, Hausa, and Swahili are heard in that language. They are not guessed from English captions. The desk then interprets the sermon.
A person and the desk
A person can speak French while the desk speaks Spanish. Set each language on Hear.
One send, both
When you Send, the destination can carry the Hear and Read combination you chose.