Similar experience. No real problems. However, RBC limits the amount I can transfer to 2k per day from browser and like 5k per day from the app.

I don't send anything from TD, but if I buy anything online half the time it forces a 2FA which requires signing into the app and confirming the transaction. I imagine signing into the app might not work nicely if I was on LineageOS.

I've never used the TD app, but the TD website seems to be designed to be as inconvenient as possible, down to disabling pasting on 2FA input fields.