My wife was talking to her (male) friend , I saw something weird

My wife and her friend were chatting on WhatsApp , they sometimes speak like a normal call on WhatsApp <br><br>There was a conversation going on between the two , I watched it and I was surprised , at the start of the conversation , my wife spoke first then suddenly my voice came from the WhatsApp call like I also said something like " did you? Or how are you? <br><br>I was in the kitchen and I didn't say anything <br><br>I think this is very weird glitch anyone has this?<br><br>Sorry for my bad English I'm Turkish