Jennings said: "The scoreboard does not quite paint the true picture of progress made after our five days of training together. I managed to see 14 players contribute over both games, and there really is a wonderful togetherness to this group which I have no doubt, as we put more detail on the floor, will help us stay in the moment against adversity and tough situations.
"Given Belarus had their defensive schemes in place and plenty of offense ready to go, I was very pleased with how our team faired with only one offense and the basic defensive philosophy to go into early battle with. There are some very promising signs."
A new-look roster, featuring six Olympians and a handful of international debutantes, pulled out an impressive showing in Lithuania in the team's first warm-up games on the road to next month's EuroBasket Women in France.
Chantelle Handy top scored for GB today with 12 points while veterans Roz Mason and Steph Gandy had ten points apiece on Sunday.