Here is the link to the CSP benefits:
https://www.chasebenefits.com/sapphirepreferred (Best to read the entire section yourself, rather than rely on conclusions posted here.)
Perhaps:
Eligible Travel Expenses include Change Fees and costs to return a rental vehicle to the closest rental agency
No:
We will not reimburse additional transportation expenses incurred by You other than those described above. This includes the difference in cost between the original fare or any new fare to return home or rejoin the Trip.
Thanks. Yes, I did read the terms. Can’t say I fully understood them.