Messages received on iwatch are not showing in my iphone message conversation thread

I have an iphone 11 and an iwatch 3. I received a series of messages on my iwatch, with my iphone sitting right next to me, but when I opened my iphone messages and go to that text conversation, those messages are not in the message conversation thread. I tried rebooting both my iphone and my iwatch, but those messages still don't appear in my text message conversation thread on my iphone. On my iphone I also tried going to Settings > Messages and toggling off and back on iMessage.