Now I got myself curious and wanted to see if Watchtower ever said anything about this. And behold, a quote:
https://wol.jw.org/en/wol/d/r1/lp-e/1101973021?q=1874&p=par#h=14From that understanding of matters, the “chaste virgin” class began going forth to meet the heavenly Bridegroom in the year 1874, as they believed him to have arrived in that year and to be from then on invisibly present. They felt that they were already living in the invisible presence of the Bridegroom. Due to this fact, when Charles T. Russell began publishing his own religious magazine in July of 1879, he published it under the title “Zion’s Watch Tower and Herald of Christ’s Presence.” He had already become familiar with Wilson’s The Emphatic Diaglott, which translated the Greek word pa·rou·siʹa as “presence,” not “coming,” in Matthew 24:3 and elsewhere. The new magazine was heralding Christ’s invisible presence as having begun in 1874. This presence was to continue until the end of the Gentile Times in 1914, when the Gentile nations would be destroyed and the remnant of the “chaste virgin” class would be glorified with their bridegroom in heaven by death and resurrection to life in the spirit. Thus the class pictured by the five wise virgins would enter through the door into the wedding.