In a satsang session a few years ago, my Guru was asked to do a quick recap of the entire Gita.
What better way, than to do it in just 4 minutes? Wow a 4-minute Gita!
He recited 1 shloka per chapter, so 18 chapters, 18 shlokas, with their meanings and application, and all extempore. It was truly a sight to behold.
For only the 2nd chapter, he recited not one, but two shlokas. 2.71 and 2.72.
To say he thinks these are important shlokas would be a massive understatement.
2.71 is vihaaya kaamaanya sarvaan. Vihaaya is giving up, kaamaan is desires, sarvaan is all. And then he recited is backwards. Sarvaan kaamaan vihaaya – All desires give up.
2.72 is similar, stating that one who achieves such state of mind, achieves liberation even at the time of death.
Each chapter has only 1 shloka that he picked. But chapter 2 alone had two. Is it important? Yes, twice as important.