Are there any incidents and occurrences of the living Awliya conversing with Awliya from the next life (who have passed away)?
There are many kind of incidents as cited in length by Imam Jalal al-din al suyuti in his book Sharh al-Sudur.
And Allah ﷻ knows the best
Imam Ahmad Rida Khan رحمة الله تعالى عليه
Translation by Dr Musharraf Hussain Al-Azhari Translator of Majestic Quran, www.majesticquran.co.uk