Every n episodes of ST:VOY, we get to watch as the titular ship gets "years" taken off its journey through some benevolent being, or one-time-use technology. In the beginning it was stated that they were something like 75 years away from the Alpha Quadrant, did the cumulative time they receive in "freebies" exceed this value?
Question brought about watching S05E15, Dark Frontiers (pt 1), when Torres states that
If I could equip our engines with even one [Borg trans-warp] coil, we could shave about 20 years off this trip.