got my unemployed brother hired into my exact same role at my company, did the interview as him, do half his work, split his paycheck

my company hires constantly for my role. my younger brother has been out of work for over a year and about eight months ago i finally put two and two together and rebuilt his cv to look like a tighter version of mine and applied for the role on his behalf. the zoom interview was the spicy part. he sat in his bedroom in a clean shirt looking the part and i sat just out of frame on his bed feeding him lines through an airpod, when they hit him with the technical questions he just looked thoughtful for a few seconds and read my answers back like he was thinking them up in real time. he got the job. hes been on payroll there for eight months now. i do most of his actual work because im in the same role and i can knock his stuff out in an extra hour a day on top of mine, he handles the meetings he can handle and pings me through teams when something gets hairy. we split his salary down the middle. the punchline is when i was interviewing as him i casually mentioned hed had another offer for a higher band, which got him onto a salary about 4k above mine for what is literally the same job. my boss told me last month theres no budget for my raise this year but theyre keeping an eye on the new lad because hes "really impressing the senior team." the new lad is me. anyway. eight months in and counting.