Why the Colossus Titan and the armored Titan werent worried about being attacked by mindless Titan the first time they attacked?


In Attack on Titan season 2 episode 9 (spoilers)

> After capturing Eren and Ymir, Bertolt and Reiner are worried than if they
> try to escape from the woods they were resting in Titan form, mindless
> Titans would attack them and kill them. Why werent they worried about this
> the first time they breached wall Maria and all the mindless titan come
> inside the walls?




They were always cautious about the surroundings. However, the situation is
different in season 2.

> As the Colossal Titan, mindless titans are not a problem due to the
> Colossal's size. However while Berthold and Reiner captured Ymir and Eren,
> they had to run fast, which means they could not rely on the Colossal Titan.
> This means that both Berthold and Reiner had to rely on Reiner's Armored
> Titan to quickly escape the walls. Keep in mind that both of them are trying
> to run fast because the Survey Corps are after them.

In the first episode,

> Reiner only transforms to create a hole in wall Maria, so it is assumed that
> as soon as the wall was breached, he transformed back into a human.




They were always cautious about the surroundings. However, the situation is
different in season 2.

> As the Colossal Titan, mindless titans are not a problem due to the
> Colossal's size. However while Berthold and Reiner captured Ymir and Eren,
> they had to run fast, which means they could not rely on the Colossal Titan.
> This means that both Berthold and Reiner had to rely on Reiner's Armored
> Titan to quickly escape the walls. Keep in mind that both of them are trying
> to run fast because the Survey Corps are after them.

In the first episode,

> Reiner only transforms to create a hole in wall Maria, so it is assumed that
> as soon as the wall was breached, he transformed back into a human.

