In the end, it all leads back to jawless fish

Theo and Rob get unexpectedly fixated on the jawless fish who swam in the seas of the prehistoric world, prompted by Theo's mention of his recent trip to Devon. There's also some chat regarding the red arrows, Paul Simon's recent gig at the Royal Albert Hall, and the etymology of knapsacks. Play along: https://www.theguardian.com/crosswords/quick/17495 Contact us: twoacrosspod@gmail.com Listen to Enthusiasts: https://open.spotify.com/artist/0p10AAj4tXDtkxfAop3lj2