Here, tous is an adjective agreeing with the pronoun ceux so according to the rule you linked to is pronounced /tu/.

Had it been pronounced /tus/, that would have lead to /tus.sø/.

Compare:

Je veux les miens plus ceux de mon frère (I want mines and my brother's ones)

where plus ceux is pronounced /plys.sø/ and:

Je ne vois plus ceux de mon frère (I don't see anymore my brother's ones)

where plus ceux is pronounced /ply.sø/.

Here, tous is an adjective agreeing with the pronoun ceux so according to the rule you linked to is pronounced /tu/.

Had it been pronounced /tus/, that would have lead to /tus.sø/.

Compare:

Je veux les miens plus ceux de mon frère (I want mine and those of my brother)

where plus ceux is pronounced /plys.sø/ and:

Je ne vois plus ceux de mon frère (I don't see those of my brother anymore)

where plus ceux is pronounced /ply.sø/.

Here, tous is an adjective agreeing with the pronoun ceux so according to the rule you linked to is pronounced /tu/.

Had it been pronounced /tus/, that would have lead to /tus.sø/.

Compare:

je veux les miens plus ceux de mon frère (I want mines and my brother's ones)

where plus ceux is pronounced /plys.sø/ and:

"je ne vois plus ceux de mon frère" (I don't see anymore my brother's ones)

where plus ceux is pronounced /ply.sø/.

Here, tous is an adjective agreeing with the pronoun ceux so according to the rule you linked to is pronounced /tu/.

Had it been pronounced /tus/, that would have lead to /tus.sø/.

Compare:

Je veux les miens plus ceux de mon frère (I want mines and my brother's ones)

where plus ceux is pronounced /plys.sø/ and:

Je ne vois plus ceux de mon frère (I don't see anymore my brother's ones)

where plus ceux is pronounced /ply.sø/.