What did Dante's The Divine Comedy and Chaucer's The Canterbury Tales have in common?

I am having a problem finding some of these too. I have found some which are

1. They both go on journeys ( Dante's through hell, and Chaucer's to Cantebury).

2. They both narrate their stories and refer to them self in the first person.

3. And third they both show dislike for the Catholic Church (Dante does by putting various popes and catholic figures in hell, and Chaucer makes most of the catholic and church figures corrupt or evil).

4. What both of these works have in common has less to do with the story or characters, but with the significant role each had in their countries use of language.

Dante Alighieri (1265-1321) wrote The Devine Comedy in a language he called "Italian". This was a language mostly based on the regional dialect of Tuscany, but with some elements of Latin combined with a few other regional dialects. His goal was to reach a wide readership throughout Italy that included both laymen and clergymen as well as other poets like himself. Prior to the Devine Comedy, virtually all written work from this region had been in Latin only. It is for this reason that Dante is referred to as the father of the Italian language.

Much like Dante, Geoffrey Chaucer (1343 - 1400) was also a crucial figure in developing the legitimacy of the vernacular, Middle English, which helped shape the modern English we use today. Prior to the The Canterbury Tales, the dominant literary languages in England were French and Latin. It is for this reason Chaucer is referred to as the father of English literature and why he and Dante are remembered not only for their collective writings, but for how each Magnum Opus stated above shaped the direction of the written Word that's used today.