I have 3 LO. DS is RFing in middle row captains chair, DD2 (3.5 years) is RFing in the other captains chair middle row. DD1 is FF in the 3rd row, far right. I DD2s carseat is about to expire and I want to get a Britax frontier and put her in the 3rd row with DD1. The problem with that is there is only 2 tethers in the 3rd row, one behind DD1 and 1 right next to her in the middle seat position. I am not really wanting the two girls to be right next to each other in that third row. Is it safe to tether a seat from the left seat position to the middle tether position? I could put her in the middle row in the captains chair, but I think she will really have a hard time not getting to chat with DD1.