Can i talk to my son thru my Alexa to his Alexa?

[sads24]

Hi, we have 3 Alexas in our house.  A different person logs into each one (I.e. I have one, my eldest has one and my youngest has one).

Is it possible for me to talk to him from my Alexa and him talk back to me from his.  A bit like a walkie talkie?  Thus enabling me to tell him his tea is ready thru my Alexa to his?

If you cannot do this from Alexa to Alexa, can I call his Alexa from my phone app?

[renegade600]

you can still do dropin if they have it enable on their echos.