- HTF data can come for one symbol but not for another
- or come with gaps (e.g. after HTF bar 3 in the next chart TF's candle we have HTF bar 5 for one or both symbols)
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.