The former Athletic Bilbao star has fallen out of favour with Spain coach Vicente del Bosque, while his Juventus colleague has never been picked by Argentina's Alejandro Sabella
After a slow start to life in Italy, the Spaniard has enjoyed a stellar debut season in Serie A, netting 14 times in total as well as forming a formidable partnership with his Argentine accomplice, who has 18 goals to his name.
Tevez, though, has not featured for his country since Alejandro Sabella took over in 2011, while Llorente has fallen out of favour with Spain boss Vicente del Bosque.
However, the latter says that both he and Tevez are still dreaming of travelling to Brazil with their respective nations.
"The Italian championship is difficult and competitive and we're hoping to be able to go to the World Cup," the former Athletic Bilbao hitman told Sky Sport Italia.
"It's difficult but we're doing well with Juve and, if everything goes well, maybe we'll be rewarded [at international level].
"Is this the most beautiful year of my life? I don't know but I'm having a great season."
Llorente and Tevez's goals have put Juve within touching distance of a third successive Serie A title triumph but, even though Antonio Conte's men are eight points above second-placed Roma with just five games to go, he is taking nothing for granted.
"We're in a privileged position in terms of the Scudetto but nothing is won yet," he warned.
"We're still three games away from mathematical victory but we're hoping to reach that goal as quickly as possible."