@ed_shin That said, the mere act of all the clicking and selecting or writing definitions takes a lot of time.
The comparison for me would more be like reading while listening on LingQ at ~55 wpm, reading while listening on YouTube with Language Reactor at ~150 wpm (I just tested it with the Harry Potter audiobook on YouTube with auto-subs at 1.3x, but having to repeat sentences every now and again) or true extensive reading while listening at 1.65x/~240 wpm. In this case, using my reading while listening speeds, we would be talking about 10M words read as extensive reading while listening, ~6M with Language Reactor and ~2.5M with LingQ. As mentioned, the LingQ reading speed is so slow because of the amount of time it requires to get a decent definition (which often includes pausing the audio to open up a dictionary and write a definition). With the translation under the subtitle on Language Reactor (aka bilingual text), you can merely glance down often to get a good definition, without ever having to click anything, hence the increased reading speed.
Is extensive or intensive reading faster for vocabulary acquisition? - #43 by nfera