Do these experienced buffs stack?

Okay I just had a quick question. Does anybody know if the Mastery of Timeways experience buff in the Warband Mentored Leveling experienced both stack together?
Or does the time weighs experience both just give you an extra 5% added to the warband leveling buff?

Also before you guys ask I did try looking on wowhead and I’m visually impaired so it was really hard to find anything there. So when I tried to also Google my question, Google was we all know was not helpful so I figured I’d come to you awesome people.

Edit: Okay okay I made this post over 4 days ago initially and honestly kind of surprised and nobody’s responded to it yet. I’m not a troll I’m just a visually handicapped person trying to get some freaking answers around here. I thought all these posts were monitored by devs and computers as well as other people? This is after all the place you’re supposed to come for answers isn’t it? I mean wasn’t this place created because the devs were too lazy to answer questions when you try to open up a ticket? Because I’ve done that too trying to ask questions about game mechanics or how something supposed to work with the game because it doesn’t seem right and I never get a response even though they say they respond to me within 24 hours but they never do.