Problem connecting two BT devices to a Pi3

[PaulitaPerezB]

I want a HC-06 and a HC-05 BT modules connect simultaneously to the Pi3 using rfcomm.
I normally connect one module with the following command and it works for me.

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sudo rfcomm connect hci0 XX:XX:XX:XX:XX:XX

But now I want to connect two modules so I tried this and return an error.

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sudo rfcomm connect hci0 XX:XX:XX:XX:XX:XX

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sudo rfcomm connect hci1 XX:XX:XX:XX:XX:XX

I want to know if there are a way to connect to devices to the Pi3 simultaneously. Because I need to use it to receive data from an Arduino and send orders to another. I do it with a Python script using PySerial.

[Douglas6]

What error are you getting? You could try

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sudo rfcomm connect 1 XX:XX:XX:XX:XX:XX

[PaulitaPerezB]

I could fix the problem!! thank you!

I tried this to connect the first module.

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sudo rfcomm connect 1 XX:XX:XX:XX:XX:XX  

and this to connect the second one:

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sudo rfcomm connect 2 XX:XX:XX:XX:XX:XX

[Douglas6]

That's interesting. I would have thought it would be '0' and '1'. Those BlueZ rascals. Although if rfcomm can't determine a valid device number, it defaults to hci0, so maybe '1' and '2' ends up being hci1 and hci0?