What nuance. Thanks to the time I can spend writing a message, I can commit to adding the details in readable format, and this data stays for reference. Whether it's instruction, some info or a question.

During call, I am scrambling to answer ASAP - like a lot of folk I know, and seemingly a lot of commenters here - so you get partial, jumbled up answer.

Calls are okay when asking about preference - something you can answer from the get go - if you want some information, use message.