When I am talking to somebody, and miss something they say, rather than immediately asking them to repeat themselves, I have learned to wait for a second or two. My brain will often catch up and “listen again”, and I will hear what was said (cue seamless conversation continuation). Other times I will awkwardly stare at them wordlessly, before asking them to repeat themselves.
I find the frequency of successfully listening again makes up for the occasional awkwardness.
May just be me, but I wondered whether anyone else does this.
I did say the content would be miscellaneous
AZF 
I think I do this. Often I say take a gamble and agree, which when inappropriate a little more awkward.
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Yes – sometimes when you rerun what you heard the sounds fall into place
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