No it only fits this seat. There is a table/bench that it fits on and this needs to be attached directly to the seating area which means that it has specific mountings that can only be found in this seat.

At 14 months you may want to look at the size of your child. Unless they are relatively small or certainly no more than average then I wouldn’t think it was the most comfortable place. Our 1 year old was ok in it but other older daughter would never have been at that age.

Unless you think they will definetly sleep 1A/1k might be a better option as they can have room on the floor between the seats to play. And if they do sleep you could have dinner together.