The rules of Wookiee life debts seem very harsh in Legends. Chewbacca remained with Han for decades after pledging himself. The life-debt extended to Han's wife, children, and brother-in-law as well. In this period, he saved their lives any number of times, such as helping save Han from Jabba. Even Chewie's death didn't end things, as his son and nephew took over the debt.
If the debt is ever-growing, and neither saving the debtor's life nor dying releases the debtee, does anything end the debt?
This question specifically pertains to Legends, as according to this answer, life debts aren't quite as drastic in canon.