question about the Wildemount Chronugy subclass ability chronal shift

I was playing in a game with friends and I was playing as a level 8 Chronugy wizard, after a creature downed one of us our bard attempted to use id insinuation and it used a legendary resistance. my question was if I had used my chronal shift ability which allows me to force a re roll on a saving throw. my question is can I use my ability to force it to burn a resistance, and alternatively if I use it on a success and it fails can it choose to use a legendary resistance on the re roll.

I personally feel that it is OP if I can force it to burn two resists

but I also feel it is op if it can choose to resist my re roll power as it wastes my ability

I want to know if anyone has a RAW answer and if not, what people think of the problem