How is 'Chanda' (Intention) related to 'Tanha' (Desire)? How is 'Chanda' (Intention)  related to 'Tanha' (Desire)?
I often hear that Karma is determined by intention. I want to know how they are all related. What comes first? What gets abandoned in meditation and Nirvana?
I know of a YouTuber who claims to have gotten Nirvana, but he said after some time he had to train himself to purposefully generate an intention to talk and explain things to other people. So did he also have a prior desire to help other people? How this three work for Enlightened people and seekers?
Chanda is a reason for Tanha. Ignorance (Avidya) is the cause for Chanda means it's the cause for Tanha. Then Tanha causes to increases the Chanda's density towards something.
Nirvana is understanding Chanda towards something is a useless thing. As nothing in this world is going to satisfy the intention (Chanda) the living beings have. That's why no one can reach ultimate satisfaction. If someone reaches ultimate satisfaction there's nothing he/she needs to do further as he/she is already satisfied. The person who doesn't want anything (as he is ultimately satisfied) is the person who obtained Nirvana.
Someone who obtained Nirvana has limitless metta (loving / kindness) towards the living beans. Due to that reason, they may try to share the path to Nirvana with others.