Does "This whilst licking his lips over the look and feel of an..." mean "this happened (his phone ringing) exactly when he was showing his excitement about the look and feel of an..."?
Context:
Further on in the walk, on Borough Road, Wentworth is talking on his mobile phone. It seems oddly inappropriate. Not just because he is mid-performance, as it were, but because shortly before he has confessed rather proudly to his lack of conversance with modern information and communications technology. This whilst licking his lips over the look and feel of an old-style Royal Mail pillar box, one of those double-barrelled ones with two slits, ‘usually manufactured in Glasgow’, as he claims.
Top answer
I think "this" refers to his confession. He confessed to his (supposed) lack of conversance with modern technology while admiring the pillar box.
— GPY
I think "this" refers to his confession.
He confessed to his (supposed) lack of conversance with modern technology while admiring the pillar box.
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