Harry secretly dashed from his US home to the service for Lord Robert Fellowes, who was married to Princess Diana’s sister Jane.
But the Duke of Sussex and his brother did not exchange a word at Thursday’s memorial in the Norfolk village of Snettisham.
One mourner told The Sun: “They were only five yards from each other.”
William and Harry chatted to mourners as they mingled at their uncle’s memorial service.
At one point the princes were standing “virtually back to back” at the wake.
But both left separately without seemingly exchanging a word, onlookers said.
The Sun revealed Harry jetted in secret from the US after previously saying he could not attend due to security fears.
Prince Harry's £8million gift for his 40th birthday
PRINCE Harry is set to inherit an £8million gift on his 40th birthday from the Queen Mother.
The late Queen Elizabeth began collecting a sizable trust fund for the Duke of Sussex , who will celebrate his special milestone on September 15, when he was just 10-years-old.
A former Palace aide told The Times: “There was a trust fund set up at the time.
“It was a way in which the Queen Mother could set aside money for when her great-grandchildren were older and a way of passing a slice of her estate down in a tax-efficient way.
“It was a way in which some of her estate could be ring-fenced for them.”
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