the sound of people talking excitedly and laughing

oh my, oh my god, whoa

in a word, in any case, anyway, in summary, in brief, in short, anyhow

in other words, with that said ...

in the end

honestly, in truth

in one breath, in one go, without a break

again? (emphatic)

next, what's next, and then

and so on, so forth, etc.