They'll be in a bind once the Rat kicks the bucket
The "Rat" isn't going "to kick the bucket" until after the following happens (Jeremiah 52):
31 And it came to pass in the seven and thirtieth year of the captivity, of Joachin king of Juda, in the twelfth month, the five and twentieth day of the month, that Evilmerodach king of Babylon, in the first year of his reign, lifted up the head of Joachin king of Juda, and brought him forth out of prison. 32 And he spoke kindly to him, and he set his throne above the thrones of the kings that were with him in Babylon. 33 And he changed his prison garments, and he ate bread before him always all the days of his life. 34 And for his diet a continual provision was allowed him by the king of Babylon, every day a portion, until the day of his death, all the days of his life.
Benedict XVI is Joachin. The 40 years of "the exile/captivity" started in July 1988 with the Lefebvre "excommunications." The "seven and thirtieth year" means the period after the completion of 36 years but before the completion of 37 years, which would be from July 2024 to June 2025. The twelfth month refers to the month of Adar in the Hebrew calendar, rather than the Gregorian calendar. So the date of the event described in Jeremiah 52:31-34, under my assumptions, would be March 25, 2025, the Feast of the Annunciation.
However, the precise date is not critical. Accepting the calendar uncertainties, the date for Benedict's restoration will be in the near future. A few years from now at most.
You can triangulate all of the dates referred to by using three sources: the 70 years in Jeremias 25-29/Daniel 9, the 40 years of the captivity/exile in Jeremias, and the years in the reign of Sedecias in Ezechiel. The 70 years starts with John XXIII calling the Vatican II Council in January 1959. The 40 years starts with Lefebvre's excommunication in July 1988, and the years discussed in Ezechiel start with Bergoglio's anti-papacy in March 2013. All of those prophecies are connected, overlap and end in 2027-2028.