P5 schools are typically looking for more size out of high school. A school like UConn is a development program, so we are looking to develop players which means adding size and strength. And, most P5 scholarships are committed so late developing linemen don't have many P5 options. That is the opportunity for a school like UConn.
I checked 24/7. Out of the top 200 rated OTs, only two 250lbs or less had committed to P5 programs and they were ranked 107 and 127. No top 100 ranked OT was listed as 250 lbs or less.
For example, look at the size of the BC and Penn St. OL in the last 2 recruiting classes:
BC: 6'7" 275, 6'7" 275, 6'4" 275, 6'7" 289, 6'4" 275, 6'5" 315
Penn St.: 6'7" 295, 6'5" 320, 6'5" 290, 6'6" 345, 6'5" 288, 6'5" 290. 6'3" 318