  An important part of second language learning is conversation which is best
practised with speakers whose native language is the language being learned. We
facilitate this by pairing students from different countries learning each
others' native language. Mixed groups of students have Zoom calls, half in one
language and half in the other, in order to practice and improve their
conversation skills. We use Zoom video recordings with audio transcripts
enabled which generates recognised speech from which we extract timestamped
utterances and calculate and visualise conversation metrics on a dashboard. A
timeline highlights each utterance, colour coded per student, with links to the
video in a playback window. L2L was deployed for a semester and recorded almost
250 hours of zoom meetings. The conversation metrics visualised on the
dashboard are a beneficial asset for both students and lecturers.
