1874, 1914 and the 10 Virgins

In the book “God’s Kingdom of a Thousand Years Has Approached”, published by the Watchtower Society in 1973, on page 209-210, para. 55 they explain that it was with the publishing of the book “Let God Be True” in 1943, that the 1874 date for the beginning of Christ’s “invisible presence” was done away with and replaced with the 1914 date.
“55. In the year 1943 the Watch Tower Bible and Tract Society publishers the book ‘The Truth Shall Make You Free.’ In its chapter 11, entitled ‘The Count of Time’ it did away with the insertion of 100 years into the period of the Judges and we according to the oldest and most authentic reading of Acts 13:20, and accepted the spelled-out number of the Hebrew Scriptures. This moved forward the end of six thousand years of man’s existence into the decade of the 1970’s. Naturally this did away with the year 1874 C.E. as the date of return of the Lord Jesus Christ and the beginning of his invisible presence or parousia. The millennium that was to be marked by the detaining of Satan the Devil enchained in the abyss and by the reign of the 144,000 joint heirs with Christ in heavenly glory was therefore yet in the future. What, then, about the parousia (presence) of Christ? Page 324 of the above book positively says: ‘The King’s presence or parousia began in 1914.’ Also the Watchtower issue of July 15, 1949 (page 215, paragraph 22),the statement is made: ‘… Messiah, the Son of man, came into Kingdom power A.D. 1914 and … this constitutes his second coming and the beginning of his second parousia or presence.’”
Ironically, the chapter that contains this revelation is entitled “Here is the Bridegroom.” In it the “anointed” JWs are likened to the 5 wise or “discreet” virgins in the parable of the ten virgins who remained on watch to welcome the Bridegroom.
If you carry that analogy to it’s logical conclusion then the scenario gets really weird. So the 5 “discreet virgins” declare the invisible arrival of the Bridegroom in 1874. What bridal procession they joined in at that time, I will leave for the reader to ascertain. But then 1874 comes and goes, 1914 comes and goes and then in 1943, the “discreet virgin” class declared that the Bridegroom arrived in 1914 – this announcement coming 29 years after the fact.
So how does the “faithful and discreet slave” match the description of the 5 “discreet virgins” of the parable?