Cochlear BAHA sound arc

Hello all,
I have been SSD almost my entire life (67 years). Was told 2 years ago I was a CI candidate. When I went to see the surgeon I wad told that Medicare would not cover the procedure because I have had this condition for so. Long and there is no data for people with SSD for 20 plus year’s with success. I was also told a BAHA may be helpful. Has anyone tried the Cochlear Sound Arc prior to scheduling surgery to see if it would help?
Thanks!