The 22-year-old Sindhu will face Chinese Taipei's Tai Tzu-ying in the final of the tournament.
And with all the determination and drive, post interval of the second game saw Sindhu running away with a series of points and maintaining a lead not allowing the Thai to get back. Tai enjoys a healthy 7-3 advantage in career head-to-head records.
Tai defeated third seed Sung Ji-Hyun of South Korea 21-9, 18-21, 21-7 in the other semi-final earlier in the day.
Even towards the end, Intanon prolonged Sindhu's win before the Hyderabadi shuttler challenged her smash. In the second, Intanon had a 3-1 lead before Sindhu went ahead 5-4. Intanon continued to snap at Sindhu's heels. They are leading 13-12 but their Danish opponents are putting up a tough fight.
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While delivering his speech, Bhagwat has asked for a complete ban on cow slaughter. "If there is no ban on gau hatya (cow slaughter), we can not be in peace", the RSS chief said.
Watched closely from the sidelines by coaches Gopichand and Indonesian Mulyo Handoyo, Sindhu inched up to 18-14, and suffered some anxious moments as the Thai narrowed the margin to 17-19.
There was no such drama in Lee Chong Wei's ferocious decimation of China's Shi Yuqi, conqueror of his great compatriot, Lin Dan, in the previous round.
Ratchanok has so far won three titles this year, including the Thailand Open in June, the New Zealand Open in August - both Grand Prix Gold tournaments - and the Denmark Open, a Superseries Premier event, last month.
Following the summit clash, Sindhu will take part in the Dubai World Super Series finals, starting in December.