Senses
接碴儿/ 接碴兒 to pick up the thread
To pick up the thread of a conversation; to join in a conversation by responding to what someone just said.
接碴儿/ 接碴兒 to follow on
To do something else immediately after finishing a previous task.
接碴儿/ 接碴兒 afterwards
After that; and then; immediately following.