Earlier Sunday lunch Barcelona?

[jooce2020]

So I've read and learned a lot in this very thorough thread, but I was wondering if anyone knew of places that were open for lunch outside of Barceloneta and earlier on Sunday, 12pmish.
I need to catch a bus at the Arc de Triomf stop around 2pm, and want to make sure to have an enjoyable lunch before I have to say my most likely very sorrowful goodbyes.
Thanks all!

[Parigi]

Maybe an early lunch - very good cipirones - at 11h30 at El Quim in the Boqueria. Otherwise normal restos are not open before 12h30, which would make lunch cut too close for you.

[caganer]

The Boqueria is closed on Sunday, as are the other public markets, so El Quim is not an option.
I'd try Allium on C. del Call, near Plaça Sant Jaume. It's open at 10:00 and is very good.