What is the playoff qualification scenario for MS Dhoni-led CSK?

MS Dhoni-led CSK are currently second on IPL 2023 points table with 15 points. A top-two spot will be guaranteed for CSK if they win both of their remaining league matches. If they win only one, they'll still advance to playoffs. In case they lose both of their matches, they'd need RCB, RR and PBKS to lose once to advance.