Questions about example sentences with, and the definition and usage of "Advertent"

A: "She is very mindful of her work. She does everything on time, but she is not good at handling unexpected situations. On the contrary, he is very lax when it comes to paperwork, but he is an excellent troubleshooter. They’ve been getting along and exchanging complements with each other for a long time as a good team."

< getting along with and complementing each other > these two need to look the same so it will sound better

getting along with each other + exchanging complements with each other = < getting along and exchanging complements with each other >