The Voice is set for a 15-minute head-to-head clash with the finale of rival Britain's Got Talent.
The latest overlap has caused friction between BBC and ITV as schedules at one stage looked to include a 75-minute overlap.
But after last-minute negotiations, the broadcasters revealed their programme line-ups and ITV agreed to delay the climax of the latest series of Britain's Got Talent.
The BBC feels ITV has still been provocative with its scheduling, with a 7.30pm start still an hour and 10 minutes earlier than every previous Saturday edition of the programme.
A BBC insider said: "This isn't about winning the ratings battle for us because we know the final will be popular.
"It's just that this is a completely avoidable situation. They could have played it later.
"ITV's claims about 'dirty tricks' with the three-minute overrun now look rather disingenuous."