Does the hadith: "Whoever catches the opening Takbeer with the Imam is granted two absolutions" mean forty prayers or forty days, and does catching the Takbeer necessitate being in the row before the Takbeer, and what if the worshiper arrives after the Takbeer but before the bowing?

The Hadith was narrated by Al-Tirmidhi from Anas ibn Malik, may Allah be pleased with him, who said: The Messenger of Allah, peace and blessings be upon him, said: "Whoever prays to Allah for forty days in congregation, catching the first takbir, two immunities will be written for him: immunity from the Fire and immunity from hypocrisy." Al-Albani graded it hasan (good) in Sahih Sunan al-Tirmidhi. It is thus clear that the duration mentioned in the Hadith is forty days.