'friend,' i meant to add that the negative size comment was probably coming from the impression that the seatpost is 'slammed' all the way down in the seat tube, making it appear at first like the bike is way too big. at 6'9", i'd suppose it's a decent fit, and you merely need to raise the post to a normal level. i have mine as high as possible and comfortable. this is difficult to explain easily, but you should have only a slight bend in the knee when seated and the pedal is at the 6:00 o'clock position. at this position, you should also be able to straighten the leg, though uncomfortably so. i can only do so seated if the pedal is at 5:00 o'clock and there is some bow in my leg.

to mount the bike, stand over it, put one foot in the pedal, take off, then sit. don't try to sit first, as you cannot do so easily with a saddle at an appropriate height.

often, when i sell a road bike, the new rider will have a hard time sitting on the saddle before trying to ride the bike. it doesn't work like that. if you can rest a foot easily on the ground while comfortably seated, you're going to have a really tough time climbing any hill in that position, and will most assuredly be forced to 'stand and mash.' i seldom need to stand and mash, due to a proper saddle height.

enjoy your big black road bike, and welcome to the hobby and forums. stay safe.