Yes, I'm trying that as well. I live near Swansea and work in Wales & England. I also give full more involved conversations a go if I think that the person I'm talking to is Welsh speaking.
I think that this is my best way of improving my Welsh, which I feel so far is still too basic (mostly in terms of understanding in the wild).
I don't think it's speed now (after the listening practices) as much as accent and vocabulary.
Last night/this morning at 05:00 (OK so I'd been up all day and night) I was talking to a colleague from Llambed. I have to say that I was slow to understand the actual words that he was saying even though I heard them all. Having said that, he then changed into English, and I wasn't any better off. It was all ok, but on a sort of time delay.
I'm hoping it is just an accent exposure thing as I'm ok with Radio and TV.
Onwards and upwards - I'll be in Llanelli this evening, so will be looking forward to see what happens.