Streak sends sngla at the Close of a candle and not on an LTP basis. So this assumption/observation is wrong. You can refer to the following thread to understand this better
As regards to this condition,
You can write RSI(14,-1) cross above 60 and Close(0) higher than High(-1)
In the above condition, Streak will wait for another candle to close after the condition of “RSI(14) cross above 60” become True and Give a signal when the Next candle Close is higher than the previous candle’s High.
If you do not want the current candle to close, and want a signal before the candle closes, you need to use the Multitimeframe function for this.