Welcome to the forum. This topic has some existing discussion worthy of review. Here is what I found with the advanced search options: Search results for 'heart rate power zone #training' - TrainerRoad
Results:
- Comparing Power Zones with Heart Rate (HR) Zones
- Heart Rate Zones (HR) vs Power Zones
- HR zones versus power - do they align?
- Higher than normal heart rate for FTP zone
And as mentioned, the 220-age is a poor way to start. You should ignore that and only use Max HR data or close estimates from your actual riding.