Have you tried? It seems the TA-Lib indicators you see are automatically generated wrappers around TA-Lib. As such the behavior should be the same as seen in the docs and example.
sma = bt.ind.SMA(self.data, period=10) sma_on_sma = bt.ind.SMA(period=5)and
ta_sma = bt.talib.SMA(self.data, timeperiod=self.p.period) ta_sma_on_ta_sma = bt.talib.SMA(ta_sma_on_ta_sma, timeperiod=self.p.period) #or sma_on_ta_sma = bt.SMA(ta_sma_on_ta_sma, timeperiod=self.p.period)