A Renko bar is not a time based bar, this is based on movement. There wouldn't be any way of know what the close time of the bar will be, and there wouldn't be a way to predict what the last bar of a session is.
It would be extremely unlikely for there to be a bar close at 15:00 exactly on a movement based bar if the session closes at 15:40.
You could instead add a 1 minute series and have the time conditions be based on that so you have predictive bar closes.
Use prints to understand the behavior.
Print the time of the bar. Print all values in the conditions. Do you see a bar where the conditions evaluate as true?

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