Upvote:0
If you miss the second flight, you'll have to buy another ticket - the risk will fall upon you. So no, I would never do this.
The one time I did something similar, I booked a four-hour layover between flights. There's still risk with that, but it's much safer.
Upvote:1
At KBP you'll have enough time to run to another gate within the terminal D, but remember that 1 hour leaves you no margin for a possible delay.