Secondary stress after the main stress in פדנה

Question

Rashi notes multiple times that the -ל prefix can be substituted by a ה- suffix like in Bereishit 28:2:

ק֥וּם לֵךְ֙ פַּדֶּ֣נָֽה אֲרָ֔ם בֵּ֥יתָה בְתוּאֵ֖ל אֲבִ֣י אִמֶּ֑ךָ וְקַח־לְךָ֤ מִשָּׁם֙ אִשָּׁ֔ה מִבְּנ֥וֹת לָבָ֖ן אֲחִ֥י אִמֶּֽךָ׃

Arise, go to Paddan-aram, to the house of Bethuel thy mother's father; and take thee a wife from thence of the daughters of Laban thy mother's brother.

In almost all cases I know, this last syllable won't be accented, however, in פדנה there's a secondary stress on the last syllable.* Does it happen due to a retracted accent (nasog achor)? Doesn't it matter that there's a semi-vowel in addition? Are you aware of other examples where the syllable pushing back the accent contains a chataf as well?

^{* In longer words it's normal to have a secondary stress before the primary accent. I assume usually they're before the main one, because the majority of Hebrew words have an ultimate stress.}

Answer 1

Mordechai Breuer called this phenomenon the gayah of a long vowel in an open syllable (§46 – געיית התנועה הגדולה בהברה פתוחה). In such cases there is an unaccented open syllable with a long vowel followed by a second accented syllable. On pp. 207–208 in Taamei haMiqra he brings several examples:

• In the first group this syllable is followed by a sheva or a chataf:
  ק֥וּם לֵךְ֙ פַּדֶּ֣נָֽה אֲרָ֔ם (Bereishit 28:2)
  וַיֵּֽנִקֵ֤הֽוּ דְבַשׁ֙ מִסֶּ֔לַע (Devarim 32:13)
  שִׂים־לְפָנֶ֣יךָֽ אֱכֹ֔ל (Samuel I 9:24)*
• In the second group the following word has an initial stress and a pashta:
  וְעָ֤שָֽׂה פֶ֨סַח֙ לַֽיהוָ֔ה (Bemidbar 9:14)
  וְאַתָּ֞ה עָשִׂ֤יתָֽה חֶ֨סֶד֙ (Samuel I 15:6)
  וְאֶת־דְּמֵ֨י בָנָ֜יו רָאִ֤יתִֽי אֶ֨מֶשׁ֙ (Kings II 9:26)*
• In the third group there are the exceptions:
  אֲ֠שֶׁר לֹֽא־הָיָ֨ה כָמ֥וֹךָֽ אִ֛ישׁ (Kings I 3:13)*
  וְנֶ֨פֶשׁ עֲבָדֶ֥יךָֽ אֵ֛לֶּה (Kings II 1:13)
  

^{* Here Mechon Mamre omits the gayah, but there is one in the Aleppo Codex.}