Is it to be understood from what Ibn ‘Umar and Abu Hurayrah did, and the fact that the people said takbeer when they heard their takbeer, that this was takbeer in unison?

No File Exists
Check below answers in case you are looking for other related questions:
Ruling on Takbeer in Unison Before the ‘Eid Prayer
Supplication (du‘aa’) upon entering the house

No File Exists
Related Answers:
Adhkaar for morning and evening
Remembering Allah When Climbing and Descending Stairs
The dhikr that is prescribed when breaking the fast
Ruling on Takbeer in Unison Before the ‘Eid Prayer
Supplication (du‘aa’) upon entering the house

Recommended answers for you:
Advice to one who does not want to get married
Praying in a moving vehicle
Division of parents’ estate between sons and daughters.
What is the sickness which permits a fasting person to break his fast?
Will a woman who does not wear hijaab go to Hell?